Katia Chirkova Crlao

Guillaume Jacques

Alexis Michaud

Jonathan Evans

The Qiangic Subgroup from an Areal Perspective: A Case Study of Languages of Muli !

Keywords: Qiangic, classification, areal linguistics, Sino-Tibetan 摘要:本文針對羌語支為漢藏語系亞語族這一假設進行研究並考察其實證效度

In this paper, I study the empirical validity of the hypothesis of "Qiangic" as a subgroup of Sino-Tibetan, that is, the hypothesis of a common origin of thirteen littlestudied languages of South-West China. This study is based on ongoing work on four Qiangic languages spoken in one locality (Mùl! Tibetan Autonomous County, Sìchu"n), and seen in the context of languages of the neighboring genetic subgroups (Yí, Na, Tibetan, Sinitic). Preliminary results of documentation work cast doubt on the validity of Qiangic as a genetic unit, and suggest instead that features presently seen as probative of the membership in this subgroup are rather the result of diffusion across genetic boundaries. I furthermore argue that the four local languages currently labeled Qiangic are highly distinct and not likely to be closely genetically related. Subsequently, I discuss Qiangic as an areal grouping in terms of its defining characteristics, as well as possible hypotheses pertaining to the genetic affiliation of its member languages currently labeled Qiangic. I conclude with some reflections on the issue of subgrouping in the Qiangic context and in Sino-Tibetan at large.

Introduction

This paper examines the empirical validity of the Qiangic subgrouping hypothesis, as studied in the framework of the project "What defines Qiang-ness: Towards a phylogenetic assessment of the Southern Qiangic languages of Mùl!". The project focuses on four Qiangic languages, as spoken in Mùl! Tibetan Autonomous County 木里藏族自 治縣 (WT mu li rang skyong rdzong). This county is part of Liángsh"n Yí Autonomous Prefecture 涼山彜族自治州 in Sìchu"n Province, People's Republic of China.

INSERT MAP 1 ABOUT HERE Map 1. Location of Mùl! Tibetan Autonomous County

The four studied languages are: (1) Sh!x$ng (spoken in Shu!luò 水洛 township), (2) Lizu [a.k.a. %rs#] (spoken in K&l" 卡拉 and Lu'b( 裸波 townships), 1 (3) Nàmùz$ [a.k.a. Nàmùy$] (spoken in Lu'b( 裸波 township), and (4) Púm! [a.k.a. Prinmi] (spoken in the central part of the county). Púm! is the language of the ethnic majority of Mùl! and a local lingua franca. 2These four Qiangic languages are studied in the context of the local Tibetan dialect (Kami Tibetan), the local Chinese dialect (South-Western Mandarin), and the local Na languages (with a special focus on the little-studied Laze language, spoken in Xiàngji&o 項腳 township of Mùl! and locally known as Mùl! Shu!tián 木里水田 or L"rè 拉熱). 3 The goals of the project are: (1) in-depth documentation of the selected languages; and on that basis (2) reflection on the validity of Qiangic as a phylogenetic unit (i.e. stressing genetic relationship and common inheritance over surface similarities) and as a monophyletic unit (i.e. assuming a single common ancestor for all subgroup languages).

This paper is organized as follows. Section 1.1 provides a brief overview of the essential features and challenges of the Qiangic hypothesis (Qiangic as a genetic unit). Section 2 summarizes the first results of documentation work. It essentially focuses on the synchronic similarities observed between the languages under study. Based on these data, I argue that features presently held as probative of membership in the Qiangic subgroup are rather indicative of a linguistic area, as these features are also found in the local varieties of the languages of other genetic subgroups (e.g. the local Tibetan dialect) and are absent from their nearest relatives outside of the area. Given that the reason for salient similarities shared by the languages of Mùl! is demonstrably due to diffusion across genetic boundaries, I furthermore argue that, contrary to the received view, the four local languages currently labeled Qiangic are highly distinct. That is, they are not likely to be closely genetically related. Section 3 discusses the defining characteristics of Qiangic as an areal grouping. It also reviews alternatives for drawing genetic conclusions about the areal languages of uncertain affiliation, currently labeled Qiangic. Section 4 concludes this paper with some reflections on the issue of subgrouping in the Qiangic context and in Sino-Tibetan at large.

Qiangic as a genetic unit: Summary and challenges

Qiangic is the hypothesis of a common origin of thirteen, geographically adjacent and little-studied Sino-Tibetan languages of South-West China. Twelve of these languages are still spoken, one is extinct (Tangut).

The idea that some languages of the Chinese Southwest cohere to form a Sino-Tibetan subgroup can be traced to F. W. Thomas (1948:88-109), who proposed a "Hsifan group" based on wordlists of Qi"ng, rGyalrong, Púm!, %rg(ng, %rs# and Nàmùy$. The label "Qiangic", under which the group is currently known, was introduced by the eminent Chinese linguist S#n Hóngk"i in the 1960s as an umbrella term for the Qi"ng, Púm!, and rGyalrong languages (S#n 1962:561; 1982; for the history of Qiangic subgroup, see S#n 2001b:160-164). The Qiangic group was expanded in the 1970s, when new languages discovered and explored in pioneering work by S#n Hóngk"i in Western Sìchu"n (e.g. Sh!x$ng, Guìqióng, Nàmùy$ and %rs#) were also seen as Qiangic (S#n 1983a, 1983b, 2001;further elaborated in Huáng 1991). Finally, Tangut was added to the group in the 1990s (S#n 1991). name in their respective autonyms [START_REF] Fúquán | Nàmùy$" y) "Nà" zh$ zúqún gu"nxi k&oluè "納木依"與 "納"之族群關係考略 [The ethnic relationship between the Nàmùy$ and Nà][END_REF]. Na languages are held to be transitional between Yí-Burmese and Qiangic languages, sharing lexical material with both groups, but lacking the extensive morphology of (Northern) Qiangic (e.g. [START_REF] Bradley | Tibeto-Burman languages and classification. Tibeto-Burman Languages of the Himalayas[END_REF]Bradley :37, S#n 2001a)).

The hypothesis of a close relationship between Laze and Na languages essentially relies on the history, culture, and self-awareness of the group (based on Gu ( and Hé 1994:6-7 and fieldwork by Alexis Michaud). The assumption of a close genetic relationship between Laze and Na is equally supported by regular sound correspondences between these languages, as discussed in Jacques and Michaud (forthcoming). After S#n (1983aAfter S#n ( , 2001b)), the thirteen Qiangic languages are subdivided, mainly on geographical grounds, into (1) a more phonologically and morphologically complex, and relatively better-studied northern branch, and (2) a less phonologically and morphologically complex, and virtually unexplored southern branch. The northern branch includes Qi"ng proper, Púm!, Mùy&, %rg(ng (Horpa), rGyalrong, Lavrung and Tangut. The southern branch comprises Zh"b", Quèyù, Guìqióng, %rs#, Nàmùy$ and Sh!x$ng.

The Qiangic languages occupy a compact, contiguous geographical area in the borderlands of Tibet. Chinese historiographic sources claim that this area was historically populated by a host of nomadic tribes, traditionally labeled "Hsifan" and closely linked to Tibetan culture and religion. 4 The Qiangic hypothesis entails that Qiangic languages share a number of common features due to their descent from a (recent) common ancestor.

The Qiangic hypothesis essentially relies on shared lexical items and typological similarities, of which directional prefixes (topography-based spatial deixis) is de facto the essential feature probative of Qiang-ness (e.g. Matisoff 2004:105). After S#n (2001:166-170), a complete list of Qiangic features probative of the membership in this subgroup includes: (1) shared vocabulary, (2) large number of consonant clusters, (3) large consonant and vowel inventories, (4) uvular phonemes, (5) contrast between prenasalized and plain initials, (6) three medials: i, y, u, (7) vowel harmony (mostly in languages of the northern branch), ( 8) few or no consonantal codas, (9) tones, (10) reduplication as important means of word formation, (11) singular-dual-plural distinction in nouns, (12) diminutive formation with a suffix derived from the morpheme for 'child' or 'son', (13) numeral classifiers, ( 14) case forms of personal pronouns, (15) dual and inclusiveexclusive forms of personal pronouns, ( 16) person and number agreement in verbs (in languages of the northern branch), ( 17) directional prefixes, (18) reciprocal forms, (19) differentiation of existential (locative) verbs, (20) rich inventories of case markers.

Yet, the Qiangic subgroup has been controversial since it was first proposed, for these four reasons:

(1) The restricted nature of the supporting evidence. This evidence is essentially limited to typologically common features, which are also found with considerable frequency in non-Qiangic languages of the area (see §2 for discussion). The probative value of the evidence is furthermore substantially outweighed by the conspicuous absence of cognacy among the shared systems. This has led some scholars to straightforwardly identify some putative Qiangic features as parallel developments (e.g. LaPolla 2003:30 for case marking and existential verbs) or areal phenomena (e.g. Shirai 2009 for directional prefixes).

(2) The small percentage of shared common vocabulary. While this feature, in contrast to the typological characteristics above, could provide more reliable support for the hypothesis of a common origin of these languages, the percentage of shared vocabulary is relatively small. It ranges from 25% between any two random Qiangic languages in more optimistic estimations (S#n 1983a:103-105) to less than 20% in more conservative assessments (Huáng 1991:355). In addition, this percentage includes many widespread Sino-Tibetan cognates and there is considerable overlap with other subgroups of the area (most notably, Yí, Na, and Tibetan). To compare, a geographically adjacent non-Qiangic language Moso (Na) shares no less than 26,9% of cognates with Qi"ng (estimation based on a sample of 1.017 basic vocabulary items, excluding 141 Chinese loanwords, in Gài and Ji"ng 1990:71).

(3) The absence of common innovations. The Qiangic subgroup has so far not been supported by common innovations, i.e. unique events common to the histories of all the languages in the subgroup, as distinct from (a) diffusion across language boundaries, (b) independent, parallel developments, (c) retention from an earlier state or, finally, (d) chance. Common innovations are held to be the only reliable basis for a linguistic subgroup (e.g. Thurgood 2003:5). In other words, the Qiangic subgroup is essentially based on synchronic features, rather than on evidence from historical comparison. 5 (4) The historical, ethnic and linguistic complexity of the geographical area occupied by Qiangic languages.

Historically, the area of distribution of the Qiangic languages lies in the zone of mixed Tibetan and Chinese influence, at the intersection of three superpowers that became dominant in the 7th and 8th centuries AD:

• the Tibetan Empire, instituted by Srong-btsan sgam-po (620-649 or 650)

• the Táng Chinese court (618-907)

• the Nánzhào kingdom (730-902) with its capital in Dàl!, later succeeded by the Dàl! kingdom (937-1253), related to modern Yí and Bái groups. These three superpowers were succeeded by a federation of small tribal states, kingdoms, and dependent districts (such as the kingdoms of Nangchen, Lithang, rGyalthang, or 5 The only (phonological) innovation for the Qiangic subgroup proposed so far is brightening, that is, a strong tendency for the Proto-Sino-Tibetan rhyme *-a to be raised and fronted to -i or -e in Tangut and modern Qiangic languages, as proposed by James A. [START_REF] Matisoff | Brightening" and the place of Xixia (Tangut) in the Qiangic branch of Tibeto-Burman. Studies on Sino-Tibetan Languages: Papers in Honor of Professor Hwang-cherng Gong on his Seventieth Birthday[END_REF]. Matisoff discusses this development essentially in relation to Tangut, but he also points out a number of parallels in modern Qiangic languages. He argues that this development is unusual in the Sino-Tibetan context, and it is therefore a valuable criterion for membership in the Qiangic group. At the same time, Matisoff (2004:350) notes that modern Qiangic languages do not display brightening to the same degree, and that the phenomenon is not regular, either within the same language or cross-linguistically. The following observations regarding this development can furthermore be made. Relatively few items shared by both Tangut and modern Qiangic languages have so far been proposed (33 words in total, [START_REF] Matisoff | Brightening" and the place of Xixia (Tangut) in the Qiangic branch of Tibeto-Burman. Studies on Sino-Tibetan Languages: Papers in Honor of Professor Hwang-cherng Gong on his Seventieth Birthday[END_REF]. Of these, even fewer are shared by more than four Qiangic languages at a time. Conversely, those that are shared by most Qiangic languages, such as 'salt' (in 12 languages) and 'rabbit' (in 9 languages) appear to be good candidates for cultural loanwords, and are hence inconclusive as to the genetic relatedness between the languages in question. Finally, this phenomenon is equally attested in non-Qiangic languages of the area, such as Na and Yí. For example, both 'salt' and 'rabbit' also display the effects of brightening in Nàx$ and Moso as well as in Nosu (Northern Yí): 'salt', Nàx$ and Moso, both ts e 33 ; Nosu ts 33 (Zh# 2005:236); 'rabbit': Nàx$ t o 33 le 33 , Moso t o 33 li 33 ; Nosu t 21 21 (Zh# 2005:162). rMili), some of which maintained a de facto independent status until well into the 20th century.

Ethnically and linguistically, the area lies at the intersection of, most importantly, Bodic and Yí-Burmese, as well as some unclassified groups, such as Na and Bái. The area of distribution of Qiangic languages is characterized by long-standing multilingualism. Long-standing multilingualism suggests diffusion as key factor in the formation of the languages of the area. It equally poses an important challenge to the subgrouping of local languages as based on common innovations and shared cognates, as no objective criteria have yet been found either to distinguish independent innovations from shared retentions, or to factor out parallel developments or effects of diffusion (see Harrison 2003:232-239 for discussion).

Not surprisingly, in view of the problems above, the membership of the Qiangic subgroup is fluid and has many times been adjusted and remains undecided for some languages.

The Báim& language (also known as Báim& Tibetan) of Northern Sìchu"n and Southern G"nsù provinces was added to Qiangic in the 1980s, because it displays features that are held to be typical of this subgroup, such as directional prefixes (S#n 1980). Currently, opinions are split between Báim& being a separate Bodic language (e.g. [START_REF] Tatsuo | Hakuba yakugo no kenky%: Hakuba no k&z& to keit& 《白馬譯語の研究:白馬語の构造と系统》 [A study of the Báim&-Chinese vocabulary 'Báim& yìy)[END_REF]S#n 1990, S#n et al. 2007:207-223) and an aberrant Tibetan dialect (Huáng and [START_REF] Bùfán | Báim&huà zh$sh) wèntí yánji# 白馬話支屬問題研究 [A study of the genetic affiliation of Báim&[END_REF], Zh"ng 1994a, 1994b).

The relationship of the Tangut and rGyalrong languages to Qiangic is equally a matter of ongoing debate. LaPolla (2003:30), for instance, argues that the relation of rGyalrong to the Rawang and Kiranti groups is much clearer than to the Qiangic group, and that similarities shared by rGyalrong and Qiangic may simply be areal influence. Notably, three northern Qiangic languages, rGyalrong, Lavrong and Horpa-Shangzhai (%rg(ng or Dàofú 道孚 in different classifications) have been demonstrated by Jackson T.-S. Sun (2000aSun ( , 2000b) ) to be an independent and coherent subgrouping in its own right, namely, rGyalrongic.

The Nàmùy$ language, held as one of Southern Qiangic languages, is argued to be genetically related to Yí and Na languages, rather than to Qiangic languages [START_REF] Cíwò | Nàmùy$y) zh$sh) yánji# 納木依語支屬研究 [On the genetic affiliation of the Nàmùy$ language]. Mínzú Y"wén 《 民 族 語 文 》[END_REF]Huáng 1997:13-15). This conclusion is essentially based on the large amount of related words between Yí, Na and Nàmùy$. 6 Notably, the same conclusion has been reached on the basis of historical, cultural, and anthropological evidence [START_REF] Fúquán | Nàmùy$" y) "Nà" zh$ zúqún gu"nxi k&oluè "納木依"與 "納"之族群關係考略 [The ethnic relationship between the Nàmùy$ and Nà][END_REF].

The Sh!x$ng language is likely to be related to Na languages, given that speakers of Sh!x$ng are considered by Nàx$ historians as part of the Na ethnos (Gu( and Hé 1994:8-9). 7 6 Inferences that can be drawn from lexical comparisons of some local languages of uncertain affiliation with Yí and Na are complicated by the lack of well-defined diagnostic criteria to distinguish between Yí and Na groups, that share much lexical material. Hence some local languages of Mùl!, e.g. Nàmùy$ (L"m& 1994;Huáng 1997:13-15) or Laze (Huáng 2009), are ambivalent between these two groups in terms of their respective shared vocabulary. 7 Notably, S#n (2001:167) also points to a large percentage of shared lexical items between Sh!x$ng and Na languages, which he argues to be borrowings in Sh!x$ng. In a similar vein, S#n interprets numerous lexical sharings between %rs# and Yí languages as results of contact (ibid.) All in all, the Qiangic hypothesis remains problematic. The two major interrelated challenges are: (1) establishing an objective foundation for subgrouping in an area that is historically, ethnically, and linguistically complex, and whose languages have not been previously documented; and (2) gathering sufficient evidence to generate and evaluate hypotheses related to the genetic affiliation of those local languages (currently held as Qiangic) that cannot be straightforwardly integrated into the neighboring genetic subgroups.

2. Qiangic as a genetic unit, as examined on the basis of four Qiangic languages of Mùl!

The project "What defines Qiang-ness" takes on the challenging task of assessing the validity of the Qiangic hypothesis. The approach is to focus on little-studied Qiangic languages spoken in one locality, Mùl! Tibetan Autonomous County, and to view these languages in the context of equally little-known local varieties of the Tibetan and Na languages. Given that one of the major challenges of the Qiangic hypothesis is the historical, ethnic and linguistic complexity of the area occupied by Qiangic languages, the choice of one locality allows one to restrict to a manageable size the scope of the contact situation and the number of involved languages in order to coherently assess the impact of both internal (genetic) factors and external (contact) factors. The choice of Mùl! as the single locality to be studied is additionally supported by these factors: (1) Mùl! displays one of the highest concentrations of Qiangic languages; combining within its borders several Southern Qiangic languages (Sh!x$ng, Lizu, Nàmùz$) and one Northern Qiangic language (Púm!); (2) Mùl! is a historically stable administrative entity (the semi-independent kingdom of rMili), which guarantees recoverability of relevant sociolinguistic and historical information.

Mùl! is a multi-ethnic and multi-lingual county. Speakers of the four Qiangic languages of Mùl! are officially classified, together with the local ethnic Tibetans (Kami Tibetans), as members of the Tibetan nationality. Together, they account for 32,59% of the county population (Mùl! Zàngzú Zìzhìxiàn Zhì Bi"nzu&n W*iyuánhuì forthcoming). Their most important historical neighbors include Nosu (28% of the county population) and Na groups (Nàx$ and Moso together 9,96%). Historically more recent new comers to this area are Sinitic (South-Western Mandarin) (21,32%), Miáo (6,96%), as well as Bùy$, Zhuàng, Bái and some other groups (altogether ca. 1,17%).

The project initially operated under the assumption that the four Qiangic languages of Mùl! are closely genetically related. In line with practices of mainstream historical linguistics, the initial goals were accordingly set: (1) to stratify loanwords in the four studied languages from languages whose historical development is well-documented and understood (most importantly in the areal historical and cultural context, Tibetan), (2) to find regular sound correspondences over sets of putative cognates, and (3) to search for common phonological and lexical linguistic innovations between the surveyed Qiangic languages.

In contrast to the original assumption of relatedness, the first results of documentation work reveal diversity as a salient feature of the Qiangic languages of Mùl!. In fact, contrasts between the languages are so sharp that they cast considerable doubt on the assumed genetic relationship between them (see discussion below). This warrants a closer investigation of newly collected data to further evaluate this diversity, prior to proceeding with work that relies on the assumption of relatedness of the group.

The following subsections (2.1-2.4) discuss similarities between the four Qiangic languages of Mùl!, as seen in the context of their most important genetic neighbors (Tibetan, Yí, Na, Sinitic). The proposed comparison is based, on the one hand, on available data on well-described varieties of Tibetan, Yí, Na and Sinitic, and, on the other hand, on newly collected data on the local Mùl! varieties of these languages (for the time being, excluding the local variety of Nosu (Northern Yí)). Lexical data are not included in the present overview, suffice it to say that the four languages share relatively few lexical items in their basic vocabulary. Overall, the percentage of shared lexical items is estimated around the customary Qiangic threshold of 20%, with cultural (Tibetan) lexicon accounting for a sizeable part of related words between the four languages. 8

Similarities between the four Qiangic languages of Mùl!

The present list of similarities is not intended to be exhaustive or final, but rather represents work in progress that will have to be modified when more comparative data become available. The list was initially intended as an overview of all shared features between the four Qiangic languages studied in the project (Sh!x$ng, Lizu, Nàmùz$, Púm!). Coincidentally, the shared features turned out to be essentially restricted to features postulated as characteristic of the membership in the Qiangic subgroup (such an overlap is indicated below as "Qiangic feature"). Notably, the list does not include such common features shared by the majority of local genetic subgroups (excluding only the later arrival into the area, Sinitic), as SOV or Noun-Adjective word orders. I have also omitted some relatively non-committal Qiangic features, such as "large consonant and vowel inventories", especially because those of the four examined languages do not appear to be significantly larger than those of their generic neighbors. 9 And in order not to detract from the main line of argument, illustrative examples are deferred to the appendix at the end of the paper.

Features shared by the four Qiangic languages of Mùl! include:

8 Consider some examples from basic vocabulary: 'man, person': Púm! HL m , Lizu HL ts o, Nàmùz$ HL ts o, Sh!x$ng H h ; 'food; cooked rice': Púm! HL bei, Lizu HL k a, Nàmùz$ LH dzae, Sh!x$ng H h . Some examples from more culturally oriented vocabulary include: 'deity' (WT lha), Púm! H a, Lizu LH a, Nàmùz$ LH ae, Sh!x$ng LH gi-a; 'flag' (WT dar), Púm! LH ti , Lizu LH ta, Sh!x$ng LH ti . A side observation is that Tibetan loans in the four Qiangic languages appear to derive from distinct donor dialects. For example, 'flower' is LH Nburu in the local Tibetan dialect (Kami), but LH met o or LH meto in Lizu, and mi 55 t o 31 in Nàmùz$, all related to WT me tog. 9 For example, Púm! has a total of 42 initials (40 initial consonants and 2 consonant clusters) and 34 rhymes (7 oral vowels, 5 nasal vowels, 22 diphthongs). To compare, Nosu has 44 initial consonants and 10 rhymes (8 syllabics, 2 non-syllabics) (L! and M& 1983:83-84). B"táng 巴塘 'ba' thang Tibetan has 48 initials (42 initial consonants, 6 consonant clusters) and 31 rhymes (9 oral and 8 nasal vowels, 5 diphthongs and 9 rhymes ending in a glottal stop) (Gés"ng 1989:16, 20). The Qiangic feature "case forms of personal pronouns" is not included in the present list, as in the surveyed languages, these forms are transparent combinations of a relevant personal pronoun and a case marker. For this reason, this feature is subsumed on the list under "case marking". The Qiangic feature "reciprocal" is included on the list under "reduplication".

(1) Pronunciation of the vowel /u/ (in Púm! ) as a syllabic bilabial trill after bilabial and apical stops

(2) Uvular phonemes: (a) contrastive with velars, as in Sh!x$ng, Lizu, Nàmùz$, or (b) allophones of velar phonemes, as in Púm! (Qiangic feature)

(3) Common principles of prosodic organization: tone systems characterized by culminativity-a restriction of not more than one pronounced lexical tone per prosodic word with one tonal assignment (mostly restricted to the first syllable of the word) affecting much or all of the prosodic word (Qiangic feature "tones", see Evans All in all, similarities (phonological, morphological, syntactic) between the four languages are strikingly few. Furthermore, given the apparent non-relatedness of relevant markers in shared systems, the majority of similarities are symptomatic of parallel developments. The observed phenomena can also be interpreted as pattern-borrowings, that is, replications of the abstract organizational pattern of the model construction of an external source using suitable elements in the replica language [START_REF] Matras | Investigating the mechanisms of pattern replication in language convergence[END_REF]. Put differently, the structural similarities observed between the four languages are likely to be instances of grammaticalization, where only the patterns of the other language are replicated (i.e. the organization, distribution and mapping of grammatical or semantic meaning), while the form itself is not borrowed. Overall, this type of grammaticalization is typical for linguistic areas.

Differences between the four Qiangic languages of Mùl!

The range of differences between the four surveyed languages is far more extensive and involves virtually all linguistic sub-systems. Differences can further be divided into two types: (1) overall dissimilarities (non-overlapping systems), and (2) dissimilarities among overlapping systems (non-cognate marking).

The former type of differences can be illustrated by distinct orders of demonstrative and noun in the four languages. The four Qiangic languages of Mùl! have no less than three distinct orders for demonstrative and noun, namely:10

(1) Dem-N (Púm! and Lizu), e.g. Púm! L u H ti HL m 'that woman', Lizu H ku-L t LH jaq 'this child' (2) N-Dem (Nàmùz$), e.g. ju 31 tae 55 =ly 55 'this house' (3) Dem-N-Dem (Sh!x$ng), e.g. H h H tõpi H h 'this story', H t i H h HL t i 'that man'. Notably, Sh!x$ng also has an alternative order, N-Dem, as in HL pu-mi L h 'this frog', H h L t i 'that man'. There appears to be a semantic distinction between the two variant orders, with the latter rather more specifically denoting definiteness of the modified noun, e.g. H bõ LH p ut i-t i HL t i 'the (or that) white yak' (Chirkova 2009). 11 As to the latter type of differences (dissimilarities among overlapping systems), none of the overlapping structural features listed in §2.1, has cognate marking in all four languages (see the appendix at the end of the paper). In addition to the apparent nonrelatedness of relevant markers, the structural features shared by the four languages vary widely with respect to specific semantic and syntactic contexts and the degree of grammaticalization per language. Let us take numeral classifier systems in the four languages as an example. (I will restrict the comparison to a more grammaticalized category of classifiers, namely sortal classifiers, i.e. those that individuate whatever they refer to in terms of the kind of entity that it is.) Based on the overall number of classifiers and their morphosyntactic environments and functions, the following patterns emerge.

Nàmùz$ has the most developed system among the four languages. In terms of the overall number of sortal classifiers, Nàmùz$ has most classifiers of the four compared languages (ca. 10 in the collected data). Some frequent forms include: (a) mo for people and large animals, (b) p ae for cattle, (c) jae for small animals, (d) po for trees, plants, (e) ly, general classifier for inanimate entities. Classifiers in Nàmùz$ can directly modify nouns, which use serves to increase precision of reference. This is to say that if a classifier occurs as the only determinative of the noun, it expresses singularity and referentiality (specificity or definiteness). For example, bu 55 =phae 51 '(that, definite) yak', Nbr 31 =mo 55 '(that, definite) wife, woman'. Finally, nouns in Nàmùz$ cannot be modified by numerals without an accompanying classifier, and Nàmùz$ classifiers are obligatory with both numerals and demonstratives.

Púm! also has relatively many sortal classifiers (9 listed in Lù 2001:151-152). For example, LH m! m H t = H ts 'one beggar', LH s k rad u H t = H tsa 'one stick', H z p L t = H p 'one axe'. As a rule, Púm! classifiers cannot modify a noun without an accompanying numeral and numerals cannot modify a noun without an accompanying classifier. A classifier is not required with a demonstrative.

Quite dissimilar to the relatively well-developed classifier systems in Nàmùz$ and Púm!, those of Lizu and Sh!x$ng are fairly restricted and consist each of only two shapebased sortal classifiers. These two classifiers are furthermore only used with numerals and are not required with demonstratives.

In Lizu, the two sortal classifiers are: (1) ka 'strip', a classifier for elongated objects, e.g. H d L t = L ka 'river', H b a H t = H ka 'one rope'; and (2) pu, a more general classifier, widely used with non-human and, more specifically, flat objects, e.g. H rwa L t = L pu 'one chicken', HL Nbuto L t = L pu 'one knife'. A classifier is not required to follow a numeral in Lizu, if the noun that it modifies is animate, e.g. HL Ndz HL t 'one Chinese', HL ts o HL 'four people'. In the case of inanimate nouns, a classifier is not required with the numeral HL t 'one', e.g. HL s -dzum L t 'one log'.

Finally, the two sortal classifiers in Sh!x$ng are (1) the general classifier ku 'item', e.g. LH li L a= L ku 'two hands', LH i-b LH gu =ku 'nine pans'; and (2) the classifier for elongated objects r 'strip', e.g. HL l si L d i= H r 'one arrow', LH q wu L i= H r 'two sticks'. A classifier in Sh!x$ng cannot modify a noun without a numeral, whereas the numeral LH d 'one' can co-occur with nouns without a classifier, to denote indefiniteness and singularity. The following table summarizes the observed patterns: The observed degree of variation between the four Qiangic languages of Mùl! (both in terms of overall disparity of their respective lexical, phonological, morphological and syntactic organization and of scalability and non-cognacy of shared systems) is unusual for a low-level subgroup, which Qiangic is purported to be, especially given the contiguity of the geographical area occupied by the four surveyed languages. 12 In contrast to the observed diversity, the expectation would rather be that similar organization of these purportedly closely genetically related languages is reinforced through contact, as it is generally held that areal influence contributes to retaining ancestral characteristics (e.g. Dryer 2008:24). Alternatively, in linguistics, as in biology, overall similarity and recency of ancestry are usually proportional (e.g. [START_REF] Sokal | Qi"ngy) gàikuàng 羌語概況 [An outline of the Qi"ng language]. Zh&ngguó[END_REF]Sneath 1963:223, Nichols 1992:250). This is to say that groups characterized by a large number of similarities are more likely to be more recently evolved from a common ancestor, whereas groups that have few similarities in common are more likely to have diverged from a common ancestor at a much older date. The striking diversity of the four Qiangic languages of Mùl! is hence critically in need of explanation when generating hypotheses concerning the relationship between these languages and their linguistic history. 13

Similarities between the four Qiangic languages of Mùl! in an areal context

Let us now turn to an examination of the similarities between the four Qiangic languages of Mùl! from an areal perspective, as compared to their genetic neighbors Yí, Na, Tibetan, and Sinitic (South-Western Mandarin). I will compare the four Qiangic languages first to well-documented varieties of these latter languages and then to newly-documented varieties of these languages spoken in Mùl!. On the whole, the majority of similarities between Lizu, Nàmùz$, Púm!, and Sh!x$ng are non-specific to the Qiangic languages of Mùl! and, instead, are shared with their genetic neighbors. All in all, among the similarities shared by the four Qiangic languages of Mùl!, as considered in the context of their neighboring languages, three types of situations can be distinguished: (1) similarities shared across several local subgroups, (2) similarities shared by the four Qiangic languages with only one of the local subgroups (either Yí, Na or Tibetan), and (3) features more specific to the languages of Mùl! (both Qiangic and non-Qiangic) and not shared with the languages spoken in the neighboring areas.

The first type includes features that are shared with most neighboring subgroups, essentially with Yí, Na, and Sinitic. These include: extensive use of reduplication in word formation, gender suffixes for animals, diminutive formation with the morpheme for 'child' or 'son', kinship prefix a-and numeral classifier systems.

The second type includes features that are shared either with the southern genetic neighbors of the four Qiangic languages (i.e. Yí and Na languages), or with their northern genetic neighbor (Tibetan). Features shared with Yí and Na include (1) pronunciation of /u/ as a bilabial trill after bilabial and apical stops, as characteristics of all Northern Yí varieties as well as of Na languages (see L! and M&, 1983:52-53, 77 for Northern Yí; and N-Dem and Dem-N-Dem orders within one group, Dryer 2008:41-42, and Sinitic languages. In the latter group, Cantonese exhibits a number of unusual characteristics in the syntax and semantics of its classifiers, such as the possessive classifier construction, which are not paralleled in other Sinitic languages [START_REF] Matthews | Cantonese grammar in areal perspective. Grammars in Contact: A Cross-Linguistic Typology[END_REF]. Crucially, such instances of deviation from one common type in a geographically discontinuous group are generally attributed to language contact with other genetic groups. For example, in the case of Cantonese, the unusual characteristics of its classifier systems are argued to be due to contact with Tai-Kadai and Hmong-Mien languages [START_REF] Matthews | Cantonese grammar in areal perspective. Grammars in Contact: A Cross-Linguistic Typology[END_REF]). 13 One possible explanation of the striking diversity of the Qiangic languages of Mùl!, if these are taken to be members of one lower genetic subgroup, would be a recent abrupt migration. This, however, does not appear to be the case, according to the respective oral histories of the groups (as outlined in Xiè 1992:48).

Yang, 2009:3, for Y'ngníng Na), and (2) multiple existential verbs (see Zh#, 2005:160-161 for Northern Yí;and Hé and Ji"ng, 1985:51-53, for Na). The feature shared with Tibetan is the past/non-past distinction in some high frequency verbs. Finally, while held to be essentially exclusive to Qiangic languages and not typical in well-documented, standard varieties of Yí, Na and Tibetan, uvular phonemes are equally attested in Moso (Gài and Ji"ng 1990:71-72), in some varieties of Nosu (L"m& 1994:51), as well as in a number of Tibetan dialects spoken in the zone of distribution of Qiangic languages (for example, Y&ji"ng 雅江 nyag chu kha, [START_REF] Acuo | Chéngzh"ng Zàngy# de y$nxì 程 章 藏 語 的 音 系 / The phonological system of Chengzhang Tibetan[END_REF]; Shíbàzi 石壩子 kun sngon, Huá and G&zàngt", 1997; Zhongu 熱務溝 zho ngu, J. Sun, 2003:782-783).

The third type comprises: (1) tone systems characterized by culminativity, and (2) directional prefixes. These are features that appear exclusive to the local linguistic varieties of Mùl! (both Qiangic and non-Qiangic).

Let us now examine the similarities between the four Qiangic languages in the context of the previously unrecorded local varieties of Tibetan, Na, and Sinitic, spoken in Mùl!, as studied in the context of the Qiang-ness project. These local varieties are, respectively, Kami Tibetan (data from personal research, Chirkova forthcoming), Laze (based on Huáng 2009), and the local Chinese dialect (based on L! 2010).

Kami Tibetan is spoken by the historically oldest inhabitants of Mùl!. 14 This dialect appears to posses almost the precise combination of similarities, as shared by the four Qiangic languages of this county, including even those that are generally held to be exclusive to Qiangic languages (such as directional prefixes), and only excluding pronunciation of /u/ as a bilabial trill after bilabial and apical stops and the precise categorization of existential verbs (see Appendix for examples). In fact, spoken in the geographic zone occupied by Qiangic languages, the Kami Tibetan dialect appears to possess almost an entire set of features which are held as diagnostic of the membership in the Qiangic subgroup. It even exhibits such strikingly non-Tibetan features as extensive use of reduplication in word formation and an incipient classifier system.

Laze, which is likely to be closely related to Na languages, is said to have arrived in Mùl! approximately six generations ago from the neighboring Yányuán County (Gu( and Hé 1994:6-7). It likewise exhibits a number of diagnostic Qiangic features. For example, (1) directional prefixes, namely: (a) g -'upward', (b) a more general prefix t iaor t ithat can indicate several distinct directions, and (c) a perfective prefix l -; and (2) case forms of personal pronouns distinguished by tonal alternation. For example, the first person pronoun: absolutive form 53 'I', ergative/agentive form 31 , genitive form 33 'mine'; the second person pronoun: absolutive form nu 33 'you', ergative/agentive form nu 31 , genitive form nu 33 'your' (Huáng 2009).

Similar to Laze, the local dialect of Chinese arrived into the area relatively recently (estimated as ca. 2-3 centuries ago). Nevertheless, this local Chinese dialect has demonstrably undergone considerable restructuring. The most striking non-Sinitic morphosyntactic features acquired by this dialect in Mùl!, as compared to its kin varieties outside Mùl! (including even those spoken in the neighboring counties of Yányuán and X$ch"ng, L! 2010), are a variant verb-final word order, accompanied by the Noun-Numeral-Classifier order, and the development of several cases marked by postpositions. 15 Case marking in the Mùl! dialect of Chinese is yet another example of pattern-borrowing, in which one native Chinese morpheme, a 213 or xa 213 上, is used to denote various relations within the noun phrase, approximating those of cases in the local languages, most importantly, animate patient (primary object or anti-ergative), instrumental and locative cases. 16 The ongoing restructuring of Chinese and Laze, witness of the intensity of language contact situation in Mùl!, are equally remarkable for their evident rapidity, which is quite contrary to the assumption that processes of convergence take millennia to complete.

In sum, a preliminary comparison of the four Qiangic languages of Mùl! in an areal context yields diversity as the most characteristic feature of these languages and no features that are exclusively shared by these languages as opposed to the neighboring genetic subgroups. At the same time, the process of contact-induced restructuring, as observed in the latter languages, is suggestive of Mùl! as a zone of active contact-induced structural convergence.

Some preliminary conclusions

The following conclusions to the discussion in this section can be made.

First, the Qiangic hypothesis in its southern end is based on insufficient evidence. Notably, it overlooks the fact that features postulated as probative of Qiang-ness are equally attested in the local varieties of languages of the neighboring genetic subgroups (Yí, Na, Tibetan, Sinitic).

Second, the profound restructuring of the local non-Qiangic languages (e.g. the Tibetan and Chinese dialects of Mùl!) indicate that Mùl! is an active convergence area, that includes languages that are genetically unrelated, but share a number of distinctive traits. In other words, the fact that genetically unrelated local languages share a number of distinctive traits is precisely because of contact-induced diffusion. 15 Consider the following example of the S-O-Num-Cls-V word order in this dialect: Third, given the intensity and extent of the convergence process, as glimpsed through the local varieties of languages of known affiliation, convergence cannot be excluded as a (non-genetic) factor which has contributed to the formation of the littleknown and highly distinct languages of Mùl!, currently labeled Qiangic. Furthermore, given that cross-linguistically, no cases of completely isolated structural interference in just one linguistic subsystem have so far been attested (e.g. Thomason and Kaufman 1988:60), the degree of restructuring as observed in languages of Mùl! is symptomatic of comparable interference affecting a range of linguistic subsystems of the languages labeled Qiangic, including also their respective lexicon (cf. Thomason and Kaufman 1988:207). In this context, the diagnostic value of lexical comparisons, if lexical correspondences are taken to be the only or the weightiest indication of genetic relatedness, is at best uncertain.

In sum, in view of the salient dissimilarities in all linguistic subsystems and the demonstrable similarities with genetically unrelated local languages, it appears prudent to err on the side of caution and, hence, to consider these four Qiangic languages of Mùl! as not closely genetically related.

Qiangic as an areal grouping: Defining features and member languages

The preceding discussion suggests that the initial research goals and the related methodology of the Qiang-ness project are in need of adjustment. In my personal work, the main objective of the project remains related to the Qiangic hypothesis, albeit in a new understanding, that is, as an areal grouping. I propose to investigate the history and the (respective) affiliation of the languages currently labeled Qiangic as critically related to the history of the area in which they are spoken, and which is typified by a number of salient traits. The two newly formulated objectives, namely, (1) studying the Qiangic area, and (2) inferring the relationship between its little-studied member languages currently labeled Qiangic, are discussed in turn below.

Linguistic or convergence areas (such as Mùl! or, broader, Qiangic) have been argued to be essentially analogous to geographical dialect continua, with different features (isoglosses) extending over different areas (e.g. [START_REF] Dahl | Principles of areal typology. Language Typology and Language Universals, Sprachtypologie und Sprachliche Universalien: An International Handbook[END_REF][START_REF] Bisang | Dialectology and typology-an integrative perspective. Dialectology Meets Typology: Dialect Grammar from a Crosslinguistic Perspective[END_REF], 2006:88). Given this parallel, convergence areas can be profitably studied using methods and major insights of dialectology, of the latter, most importantly, a contrast between the typologically more consistent core and more diverse periphery. The relevant approach consists in: (1) defining characteristic local features, (2) describing their geographical distribution and local configurations, (3) adducing reasons for this distribution: arriving at an understanding of the (socio)linguistic mechanisms that lie behind the geographical distribution of linguistic phenomena, the location of isoglosses, and the diffusion of linguistic innovations.

In the area under discussion, the defining areal features considerably overlap with those established for the Qiangic subgrouping hypothesis (Qiangic as a genetic unit), but they are not limited to them. A new understanding of Qiangic as an areal grouping naturally entails that a coherent understanding of its linguistic history as well as that of its member languages necessitates moving beyond the current practice of restricting the scope of examined languages to those labeled Qiangic. Increasing the scope of languages naturally increases the number of relevant characteristic traits. For example, characteristic features of Mùl! are essentially those outlined for Sh!x$ng, Lizu, Nàmùz$, and Púm! in §2, but not limited to these. When all local languages are taken into account, a complete list of features is likely to be larger, with some features non-overlapping for some languages. For instance, pronunciation of /u/ as a syllabic bilabial trill after bilabial and apical stops is equally common for Nosu, Sh!x$ng, Lizu, Nàmùz$, and Púm! (after ), but this feature is not attested in Kami Tibetan. Also, an egophoric-non-egophoric (conjunct-disjunct) system is shared by Kami, Lizu and Púm! (and possibly, Laze), but not by Nàmùz$ or Nosu.

As pointed out in §2, features shared by Lizu, Nàmùz$, Púm!, and Sh!x$ng can be further divided into those shared by these languages (1) with several neighboring genetic groups, (2) with either the southern or the northern genetic neighbors of these languages, and (3) those, mostly restricted to the languages of Mùl! (of all local genetic subgroups). Discarding the non-committal first type, the second and the third types appear most telling as to the linguistic history of the local Mùl! languages. Namely, the second type is suggestive of a link (either genetic or through contact) with either Yí, Na, or Tibetan, whereas the third type that is essentially restricted to the Qiangic area (exemplified by directional prefixes, and, possibly, also uvulars) is potentially indicative of some features that may originate in the local languages, that are unrelated to any of the better known local genetic subgroups (Yí, Na, Tibetan).

Furthermore, the precise inventory and the scalability of the structural (typological) features that are shared by the languages of Mùl! are symptomatic of a transition in the area between two widely divergent typological types, namely (1) Tibetan and (2) Yí and Na. Of these two types, Tibetan is agglutinative with complex suffixal morphology (e.g. well-developed case marking systems). It does not have numeral classifiers or multiple existential (locative) verbs. Tibetan has template word-tone systems (J. [START_REF] Sun | Typology of tone in Tibetan[END_REF]. The typologically close Yí and Na, on the other hand, are predominantly isolating. Yí expresses syntactic relations essentially by means of a rigid word order, whereas Na makes restricted use of case marking. Both Yí and Na have welldeveloped systems of numeral classifiers and multiple existential (locative) verbs. The two groups have omnisyllabic tonal systems. In addition, the recent arrival into the area, Sinitic, represents yet another typological type. Similar to Yí and Na, Sinitic is isolating, it has omnisyllabic tones, and a well-developed numeral classifier system. On the other hand, Sinitic has a predominant verb-medial word order and no multiple existential verbs.

Language contact in the research area leads to the mutual rapprochement of these distinct types, yielding a number of transitional subtypes in the languages of Mùl!. This development can be clearly detected in the local languages of known genetic affiliation. For example, Kami Tibetan acquires such a non-Tibetan trait as an incipient classifier system, whereas the local Chinese dialect develops such a non-Sinitic feature, as a system of postpositional case markers. Notably, in Sino-Tibetan at large, those structural features that are common in the languages of Mùl! (e.g. numeral classifiers, multiple existential verbs) are held to be recent, largely independent and subject to contact effects from nearby languages (e.g. [START_REF] Lapolla | Parallel grammaticalizations in Tibeto-Burman: Evidence of Sapir's "drift[END_REF], Bradley 2005:224 for classifier systems). This entails that in local Mùl! languages of uncertain affiliation, these linguistic systems are likewise likely to have been affected by language contact, potentially obscuring the relationship of these languages with their possible relatives outside of the area.

Let us now turn to the issue of inferring the genetic affiliation of the local phylogenetically more obscure languages (Sh!x$ng, Lizu, Nàmùz$, Púm!). Two possibilities are conceivable:

(1) These languages are related to the neighboring genetic subgroups and are considerably restructured through contact in the area to obscure the original relatedness.

(2) These languages are genetically unrelated to the neighboring genetic subgroups and, possibly, also to each other, with a further possibility of distinct subgroups among them, similar to rGyalrongic, and/or isolates. These languages may likewise be considerably restructured through contact to make them more similar to their non-genetic areal neighbors.

Reliance on areal characteristic features confounds the two types (the current Qiangic hypothesis, Qiangic as a genetic unit). Conversely, differentiation between the two possibilities necessitates new subgrouping that will take into account (1) areal tendencies, as gleaned through restructuring of local varieties of languages whose genetic affiliation is not disputed, and (2) typological profiles of the neighboring genetic subgroups to serve as reference points for comparison. In sum, it calls for an interdisciplinary approach, combining studies on language typology, language contact, and comparative-historical linguistics.

The conventional subgrouping procedure based on prioritizing a limited number of similarities that may be indicative of common ancestry (common innovations) and essentially favoring one linguistic subsystem (lexicon), in the absence of objective criteria to factor out diffusion, cannot guarantee objectivity of results in an area of considerable historical, ethnic and linguistic complexity (such as the one discussed presently), especially in the absence of previous attestations of its languages. A reliable alternative consists of subgrouping based on a maximum large number of synchronic similarities, that are further not prioritized as to their historical significance, that is, overall synchronic similarities, whatever these similarities may signify (genetic inheritance or results of diffusion). Overall similarity between any two languages or groups of languages is a function of the similarity of the many traits in which they are being compared. (Note that the use of a broad range and variety of correlated similarities, both in structure and form, effectively eliminates chance and parallel developments as their possible origins.) Distinct subgroups can be constructed because of diverse trait correlations in the groups under study. Notably, this procedure yields natural groups, that is, groups whose members share many correlated features and which are, for that reason, likely to be monophyletic. Finally, overall synchronic (or phenetic) similarity and phylogenetic history are treated as formally independent of one another, and phylogenetic information is obtained by conjecture from synchronic type of evidence.17

A natural objection to this approach may be that reliance on synchronic similarities runs the risk of confounding among similarities those due to genetic inheritance and those due to convergence. Fortunately, in linguistics, as in biology, phenetic groups are usually monophyletic and there is as yet no acceptable evidence that overall convergence or convergence in phenetic resemblance does take place to any marked extent (e.g. Sokal and Sneath 1963:97). Furthermore, in linguistics, mixed languages, such as pidgins and creoles (e.g. Ma'a [Mbugu] or Media Lengua), whose origins are non-genetic, represent an extremely rare and unusual effect of societal contact, so that, in most cases, it is possible to distinguish mixed languages, whose origins are non-genetic, from languages whose development has followed a more common genetic line (cf. Thomason and Kaufman 1988:3). The local Tibetan dialect of Mùl! is a case at hand. While considerably restructured due to areal convergence (acquiring many non-Tibetan features and loanwords), its lineage is beyond dispute (given overall clear continuity in its phonology, morphology, lexicon and syntax with its nearest relatives outside of the area).

I propose to use this procedure as a hypothesis-generating tool in connection to the (respective) affiliation of Sh!x$ng, Lizu, Nàmùz$, and Púm!. This procedure can rely on existing hypotheses based on impressionistic or more systematic and grounded assessments of the overall respective similarities of these languages with their various neighbors. According to these previous hypotheses, Púm! is conceivably related to Qi"ng and Mùy&, as argued to be fully substantiated by cognate sets (Thurgood 2003:17). Sh!x$ng, on the other hand, is likely to be related to Na languages (Gu( and Hé 1994:8-9). Finally, on the strength of, for the time being, impressionistic lexical and structural similarities, Lizu and Nàmùz$ may be more closely related to Yí languages than they are to their remaining linguistic neighbors (for Nàmùz$, see L"m& 1994; Huáng 1997:13-15). 18 Needless to say, at this stage, these are merely working hypotheses, to be either confirmed or falsified by systematically taking into account a variety of linguistic subsystems and features.

In the following section, I will elaborate on the hypothesized close relationship between Sh!x$ng and Na languages, as this relationship appears to be most straightforward among all aforementioned cases. This relationship is assessed against the background of areal typological tendencies, as discussed above.

On the similarity between Sh!x"ng and Na languages

approach (McMahon and McMahon 2006:72), or statistical methods, as, for instance, used in dialectometry. A similar approach is advocated in [START_REF] Kessler | The Significance of Word Lists[END_REF], where it is however restricted to the domain of lexicon, to allow application of statistical methods in historical linguistics. 18 For example, Lizu shares with Yí many lexical items (cf. S#n 2001:167). It also shares with Nosu many grammaticalizations (both form and function), such as (1) grammaticalization from 'man, person' (Lizu su, Nosu su) to a nominalizer, e.g. Lizu HL -ts u-su 'blacksmith' (from HL 'iron', HL ts u 'to forge'), or (2) that from the verb 'to make' (Lizu LH mu, Nosu m 33 ) to an adverbalizer, e.g. Lizu H a-za=mu LH ji 'take care', literally 'go slowly', a conventional expression of farewell). Overall, many Lizu function words have formally and functionally close counterparts in Nosu (based on Hú 2002).

Sh!x$ng displays significant similarity with Na languages in all its linguistic subsystems and no comparable similarity with any other local language or group of languages. Most importantly, there is substantial continuity between Na languages and Sh!x$ng in terms of their morphology and syntax (as a productive combination of meaning and form), namely: 19(1) Derivational morphology. Gender suffixes for animals, 'male': Nàx$ p v 33 , Sh!x$ng p ; 'female' (feminine and augmentative): Nàx$ mi 33 /mv 33 , Sh!x$ng mi. Nàx$ male suffix zo 33 corresponds to the male and diminutive suffix zõ in Sh!x$ng. Both forms stem from morphemes for 'male, son'.

( (3) Nominalizer, grammaticalized in Moso and Sh!x$ng from the morpheme for 'person'. For example, 'wood-cutter': Y'ngníng Na s 33 d 31 x 33 (from x 33 'person'), Sh!x$ng HL sti-h (from H h 'person').

(4) Reduplication in adjectives with the prefix a-(to signal intensification). For example, Lìji"ng mbe 33 'thin' vs. 33 mbe 33 mbe 13 'very thin'; Gu"bié bi 33 'thin' vs. 31 bi 55 bi 33 'very thin', Sh!x$ng LH b 'thin' vs. LH a-b -b 'very thin'.

(5) Suppletive forms of the verbs 'to come' and 'to go': Some additional features include:

(1) grammaticalization of the verb 'to make' into an e.g. Lìji"ng t u 31 be 33 nd i 33 'go quickly' (from be 33 'to make'), Sh!x$ng L t õ L b = H si LH p ae 'precipitously escape' (from LH b 'to make', followed by the clause connector si)

(2) deliminative verbal prefix related to the numeral 'one', Y'ngníng Na d 33from d 33 'one' [START_REF] Lidz | A synopsis of Yongning Na (Mosuo)[END_REF], Sh!x$ng d ifrom LH d 'one'. For example, Y'ngníng Na d 33 -di 13 'to follow (for a while)'; Shixing LH d i-'to have a look'.

At the same time, internal divergence between Sh!x$ng and Na languages is manifested in the lack of agreement between lexical and some grammatical subsystems. 20 Divergences between grammatical subsystems are furthermore essentially restricted to those systems that appear to be particularly prone to restructuring in the Mùl! area, as observed in its languages of known genetic affiliation, or to those salient phenomena that are exclusive to the area, namely:

(1) Sh!x$ng's system of case markers is more developed than that in other Na languages. More precisely, Sh!x$ng has more cases than Nàx$ and Moso; and case markers that overlap between these languages appear unrelated.

(2) Sh!x$ng has a highly reduced classifier system with only two sortal classifiers (one general and one for elongated entities, see §2.2). The development of its classifier system furthermore fits within the context of the overall south-north gradual reduction of classifier systems in Na languages. Thus, Nàx$ has slightly over 40 sortal classifiers (as counted from Pinson 1998:245-251), Y'ngníng Na has approximately 15 sortal classifiers [START_REF] Lidz | A synopsis of Yongning Na (Mosuo)[END_REF]:8-14, Yang 2009:24-25), whereas Laze has only 5 to 10 sortal classifiers (Huáng 2009, Alexis Michaud, p.c.). This transition appears further 20 While systematic lexical comparison between Sh!x$ng and Na languages is yet to be undertaken, pending also a rigorous phonological analysis of Sh!x$ng, two observations regarding shared lexical items between Sh!x$ng and Na languages can be made. First, on an impressionistic level, lexical similarities between these languages are substantial, but they are expected to be significantly fewer than 60%, as shared between Nàx$ and Moso. Notably, in comparison to the latter languages, Sh!x$ng has an extensive number of Tibetan and Púm! loans. Second, some diagnostic regular correspondences between Nàx$ and Moso (such as that between a prenasalized initial in Nàx$ and a non-nasal initial in Moso) may be paralleled in Sh!x$ng (a nonnasal initial followed by a nasalized vowel). For example, 'bridge': Nàx$ ndzo 31 , Moso dzo 33 , Sh!x$ng H z ; 'to sit; to live': Nàx$ ndz 31 , Moso dz 13 , Sh!x$ng H dz ; 'short': Nàx$ nd r 33 , Moso da 33 , d r 33 ; Sh!x$ng LH d .

accompanied by that (also south to north) from omnisyllabic tone systems (Nàx$) to restricted tone systems, characterized by neutralization of tonal contrasts (Y'ngníng Na, Laze). A correlated development is that of classifiers: from free forms (Nàx$) to bound forms (enclitics to numerals, as in Laze).

(3) Sh!x$ng also has a better developed (than in other Na varieties) system of existential (locative) verbs.

(4) Sh!x$ng has directional prefixes.

(5) Sh!x$ng has a tone system characterized by culminativity (as discussed in detail in [START_REF] Sun | Approaching the prosodic system of Shixing[END_REF].

The reason for these dissimilarities between Sh!x$ng and its supposed Na relatives outside of the area is likely to be contact influence from the areal neighbors of Sh!x$ng, most importantly, its closest geographical neighbors in Shu!luò Tibetan and Púm!. So, as a first approximation, Sh!x$ng can be hypothesized to be a Na language that has undergone considerable restructuring in Mùl!. 21 More fine-grained studies, including the largest possible range and number of similarities between Sh!x$ng and Na, accompanied by careful lexical comparisons, will reveal whether these languages form one natural group and will further lead to the conclusion of the precise nature of the relationship between them (genetic or contactinduced).

Subgrouping in the Qiangic area and Sino-Tibetan at large

It is a lasting contribution of S#n Hóngk"i to the field of Sino-Tibetan studies to single out the Qiangic area, and to identify some of its key features, while focusing on its languages of uncertain affiliation. Follow-up investigations, such as the ongoing work on the languages of Mùl!, as discussed presently, suggest that the initial interpretation of the nature of similarities between the more obscure languages of the Qiangic area as genetic requires adjustment, and that a coherent understanding of the relationship between these languages critically relies on that of the complex multi-lingual area, in which they are spoken. To adduce an explanation to the many salient areal features, some of which are truly unique in the Sino-Tibetan context, we will need to move beyond the usual practice of restricting the scope of studied languages to those labeled Qiangic. This new approach will increase both the number of concerned languages and the number of relevant areal features. As a result, Báim& Tibetan will rightfully reclaim its place as a valid and telling member of the Qiangic Sprachbund.

21 Notably, the two putative Na languages of Mùl!, Laze and Sh!x$ng, both exhibit salient areal Mùl! features and differ essentially in their respective degree of restructuring. Namely, Sh!x$ng is more profoundly (lexically, prosodically and syntactically) restructured than Laze. As a first approximation, this may be simply due to a longer time of residence in Mùl!, and consequently, a longer time of exposure to convergence: ca. 500 years for the Sh!x$ng group (Xiè 1992:48) vs. ca. 200 years for the Laze (Gu( and Hé 1994:6-7).

Needless to say, the unique features of the Qiangic area are likely to provide new insights into the history of Sino-Tibetan at large. Not surprisingly, related comparative and reconstruction work can only be revealing, if it is performed on coherent, natural groups, whereas the issue of the precise subgrouping in the complex Qiangic area is far from resolved, as I have tried to show.

On a broader scale, the problem of subgrouping, as discussed in relation to Qiangic, is emblematic for Sino-Tibetan at large, where the precise subgrouping of constituents remains in many cases controversial. In addition to outstanding challenges of subgrouping in historical linguistics in general, such as lack of objective criteria to distinguish retentions from innovations or absence of objective criteria to factor out diffusion or identical independent change (see Harrison 2003:232-239 for discussion), added challenges to subgrouping in the Sino-Tibetan context comprise (Handel 2008:426, 431, 435):

(1) absence of a complete reconstruction of Proto-Sino-Tibetan, that makes it difficult to identify shared innovations with certainty between proposed subgroups (at the same time, a complete reconstruction in turn requires a clear subgrouping, without which it is difficult to properly weight and evaluate data from the daughter languages)

(2) insufficient documentation of many Sino-Tibetan languages (3) complex migration histories and areal convergence, obscuring recognition of genetic relationships (e.g. LaPolla 2001) (4) existence of many languages with monosyllabic roots that increases the probability of chance resemblances leading to the false identification of cognates.

Yet one more momentous challenge of the Sino-Tibetan family is the pervasive absence of previous attestations (direct historical evidence) of many of its languages.

Solutions to these fundamental problems may or may not be found. For instance, no previous attestations of genetically obscure languages of the Qiangic area are in all likelihood forthcoming. While steadily working towards solutions and hoping that some obstacles can eventually be overcome, in my opinion, studies on the linguistic history of Sino-Tibetan languages have in the meantime everything to gain by turning to a broad range and variety of available and steadily growing body of empirical evidence, including that which is normally discarded by the conventional comparative method (such as typological features) for many clues that they can provide on specific scenarios of diachronic change.

The initial phase of classifying Sino-Tibetan languages now appears to be complete. It consists of "classification from above" (family into subgroups) and is based on a small number of criteria (cognate vocabulary, common innovations). This allows scholars to isolate groups of a manageable size for study. Due to the use of a small number of criteria, this type of classification unavoidably runs the risk of yielding groups that are not natural (not monophyletic), and hence are neither complete nor sufficiently discrete to be used for precise purposes, such as reconstruction work. The next logical step to be taken is to refine proposed subgroups to ensure completeness and accuracy of information that can be obtained from each of them on their respective ancestral states. In my opinion, this can be profitably done by changing the approach to that of "classification from below" (languages to subgroups), especially at the often fuzzy boundaries of already proposed subgroups, to arrive at groups that are defined by overall synchronic similarities, in other words, groups that are likely to be monophyletic. An added bonus of the classification from below is that definition of each natural group is intrinsically relational to that of its kin. Consequently, pursuit of boundaries of each and every natural group is bound to shed light on the nature, scope, and history of many of its areal neighbors.

Appendix: Features shared by the four Qiangic languages of Mùl! (Púm!, Lizu, Nàmùz", Sh!x"ng) exemplified and compared to Kami Tibetan (related to § §2.1 and 2.3)

(1) Pronunciation of the vowel /u/ (in Púm! ) as a syllabic bilabial trill after bilabial and apical stops. For example, Lizu HL tu [t 51 ] 'bean', Nàmùz$ tu 13 [t 13 ] 'to slaughter', Sh!x$ng H du [d 55 ] 'oil', Púm! H p [p 55 ] 'to dig'. This feature is not attested in Kami.

(2) Uvular phonemes: (a) contrastive with velars, as in Lizu, Nàmùz$ and Sh!x$ng, e.g. Lizu LH ne-ko 'to put (inside something)' vs. LH ne-qo 'to be blind'; Sh!x$ng H k 'foot' vs. H q 'feces', or (b) allophones of velar fricatives, as in Púm! and Kami Tibetan. For example, Púm!: LH xa [χ 24 ] 'to bite', H ã [ ã 55 ] 'fang'; Kami, H x [χ 55 ] 'meat, flesh' (WT sha), L xu [χu 13 ] 'yoghurt' (WT zho).

(3) Common principles of prosodic organization: tone systems characterized by culminativity-a restriction of not more than one pronounced lexical tone per prosodic word with one tonal assignment (mostly restricted to the first syllable of the word) affecting much or all of the prosodic word, see [START_REF] Sun | Approaching the prosodic system of Shixing[END_REF] for the prosodic organization of Sh!x$ng, [START_REF] Chirkova | Essential characteristics of Lizu, a Qiangic language of Western Sichuan[END_REF] for the prosodic organization of Lizu, and Chirkova (forthcoming) for the prosodic organization of Kami.

(4) Identical principles of word-formation, including:

(a) Extensive use of reduplication. Reduplication involving dynamic verbs expresses frequentative or iterative meaning, e.g. Lizu HL ka 'to hit' vs. H ka-ka 'to fight', Nàmùz$ LH qae-qae 'to scratch an itch', Sh!x$ng LH dzõ-dzõ 'to run'. An additional meaning of reduplication is reciprocity, e.g. Sh!x$ng LH q o-q o 'to help (each other)'. The meaning of reduplication for stative verbs (adjectives) is intensification, e.g. Lizu H u 'thick' vs. H uu '(very) thick'; Sh!x$ng H gu -gu '(very) round'; Kami L 'light' vs. LH -'(very) light'.

(b) Compounding, e.g. Nàmùz$ ie 55 -bie 31 lo 55 -χo 31 'carrot', from ie 55 -bie 55 'turnip', lo 55χo 31 'red'; Lizu H ts o-mo 'elderly person', from HL ts o 'person', LH t e-mo 'old' (with the directional prefix t e-); Sh!x$ng HL ts -χ o 'salty', from HL ts 'salt', HL q osõ 'bitter' (the initial q -in 'bitter' undergoes lenition in the intervocalic position, see [START_REF] Sun | Approaching the prosodic system of Shixing[END_REF] (3) Affixation. This type comprises:

(i) Kinship prefix a-(older kin), e.g. Lizu, H a-ja 'older sibling (brother or sister)', Nàmùz$: ae 55 -jae 55 'older sibling (brother or sister)', Sh!x$ng and Kami: LH a-ju 'older brother', LH a-i 'older sister' (ii) Diminutive suffix derived from the morpheme for 'child' or 'son': In addition, Sh!x$ng has an aspectual (perfective) prefix l -.

(7) Past/non-past distinction (suppletive forms) in some high frequency verbs and nominalization markers. Consider, for instance, past and non-past stems of the verb 'to go': Existential verbs in Kami fall into two contrastive types, on the one hand, those that belong to the personal sphere of the speaker (egophoric), and, on the other hand, those that do not. For example, for the verb 'to exist; to be', the egophoric form is L Nd ('dug) and the non-egophoric form is H n! (snang); for the verb 'to have, to possess', the egophoric forms are L u (yod) (old knowledge) and L ã (yod.?) (new knowledge), whereas the non-egophoric form is again H n! (snang).

  Identical principles of word-formation, including: (a) extensive use of reduplication (Qiangic feature), (b) compounding and (c) affixation. The latter comprises: (i) Kinship prefix a-(for older kin) (ii) Diminutive suffix derived from the morpheme for 'child' or 'son' (Qiangic feature, non-related forms) (iii) Gender suffixes for animals (5) Numeral classifiers (Qiangic feature, for the most part non-related forms, see §2.2 for discussion) (6) Directional Prefixes (Qiangic feature, for the most part non-related forms) (7) Past/non-past distinction (suppletive forms) in some high frequency verbs and nominalization markers (for the most part non-related forms) (8) Multiple existential verbs (Qiangic feature, for the most part non-related forms)

Table 1 .

 1 Number, morphosyntactic environments and functions of sortal classifiers in the four Qiangic languages of Mùl!

		Number	Can a classifier modify a	Can a numeral modify a	Are classifiers
			noun without a numeral?	noun without a classifier?	obligatory with
			(Related function)	(Related function)	demonstratives?
	Nàmùz"	many	+	-	+
			(singularity, definiteness)
	Púm!	many	-	-	-
	Lizu	2	some can	+	-
			(singularity, definiteness)	(mostly with animate nouns;
				numeral 'one', indefiniteness)
	Sh!x"ng	2	-	+	-
				(numeral 'one', indefiniteness)

  t i u 213 ken 44 o 53 men 44 nia 53 ko 213 t ei 213 nia 53 t ian 44 t iao 21 ken 44 a 213 t 21 fan 213 ia 213 lei 44 就跟我們兩個這兩天調羹上吃飯樣的 'just like the two of us were eating with a spoon this couple of days', (3) locative marking: pan 213 t i 44 a 213 lo 53 lao 53 213 半梯 上攏了 'reached half the stairs'.

	i 21	t i n 44	ten 53	lao 53	,	t a 44	t i u 213	t u 44	tso 213 t r 44	i 21	ko 213	ia 53
	一	天	等	了	是	他	就	豬	坐墩兒	一	個	想
	one day	wait	PRF	be	3	just	pig	Rump	one item	think
	iao 213 .
	要
	Want
	'He waited one whole day, he really wanted to buy a piece of pig's rump.'
	16 For example, (1) animate patient marking: o 53 men 44 i 53 a 213 ta 44 fan 44 i 21 我們你上當翻譯 'we will
	translate for you.'; (2) instrumental marking:

  2) Aspectual marking: (a) progressive aspect marker (grammaticalized in Moso and Sh!x$ng from the locative verb 'to exist'), i.e. Y'ngníng Na d o 31 ; Sh!x$ng d õ. Compare, 'to exist': Y'ngníng Na d o 33 , Sh!x$ng H d õ (b) perfective aspect marker: Nàx$ si 33 , se 31 ; Y'ngníng Na ze 33 ; Sh!x$ng s . For example, 'have eaten': Nàx$ ndz 33 se 31 ; Y'ngníng Na dz 55 ze 31 ; Sh!x$ng L ldz = H s (with the perfective prefix l -) (c) possibly, also the experiential marker: Nàx$ d i 33 , Y'ngníng Na d i 33 , Sh!x$ng d . For example, 'have once eaten': Nàx$ ndz 33 d i 33 , Y'ngníng Na dz 55 d i 33 , Sh!x$ng L dz = H d

  Some continuity in the system of existential verbs (even though that in Sh!x$ng is more elaborate than those in Nàx$ and Moso, with some unrelated forms), namely: 'to have, to possess; to exist': Lìji"ng Nàx$ d y 33 (inanimate entities), nd y 33 (animate entities); Y'ngníng Na d o 33 ; Sh!x$ng LH d õ (inanimate entities), LH j (animate entities); 'to exist (inside a container)': Lìji"ng Nàx$ i 33 , Y'ngníng Na i 33 , Sh!x$ng H k u ; 'to exist (attached to an entity)': Lìji"ng Nàx$ dz 31 , Y'ngníng Na di 31 , Sh!x$ng LH dzi.

	(6)
	'to come'	Lìji#ng Nàx"	Y$ngníng Na	Sh!x"ng
	past	ts 31	ts 31	LH t
	non-past	ts 31 , l 33 , l 33	i 33 , u 33	H l , LH liu
	imperative	lu 33	u 33	LH liu
	'to go'
	non-past	b 33 , b 31	bi 33	LH bi
	past	k 55 , x 33 , x 13	k e 13 , x 33	LH x
	imperative	fa 33	xv 33	LH xu

Sh!x"ng mi p HL

  LH m ts 'cat': LH m ts -tsu 'kitten' Lizu LH muts 'cat': LH muts jaq 'kitten' Nàmùz" z55 'child' jo 55 'sheep': jo 55 -z 55 'lamb' Sh!x"ng LH zõ 'child, male' LH maz 'cat': LH maz -zõ 'kitten' Kami LH muts -ma 'female cat'; LH muts -bu 'male dog' Nàmùz" mie 1.(N)phu 2. (ta 55 -)bu 55 rae 55 'chicken': rae 55 -mie 55 'hen'; rae 55 -phu 55 'rooster' χa 33 la 55 'cat': χa 33 la 55 a 55 -mie 55 'female cat'; χa 33 la 55 ta 55 -bu 55 'male dog' k u 'dog': HL k u -mi 'bitch, female dog'; HL k u -p 'male dog' LH maz 'cat': LH maz -mi 'female cat'; LH maz -p 'male dog' Kami mu (WT mo)p u (WT pho) H t 'dog': LH mu-t 'bitch'; LH p u-t 'male dog' H wu-li 'cat': LH mu-li 'female cat'; LH p u-li 'male cat'(5) Numeral classifiers (see §2.2) Kami has an incipient system of numeral classifiers, in which classifiers are optional and restricted to animate nouns. Consider, for instance, the optional use of the (incipient) classifier H Ngu (WT mgo 'head') in the expression L = H Ngu L t i (WT mi mgo gcig) 'one person'.

			up	down	inside outside towards oneself	from oneself
	Púm!	t 55 -	n -	h -	k -	d -	t -
	Lizu		d -	n -	k -	t -
	Nàmùz"	lo-	mi-		t i-
	Sh!x"ng	d i-	mi -	k u-	b -
	Kami	jae-	mae-			ts ae-	p ae-
		Diminutive suffix	Meaning	Examples
	Púm!	H tsu			'son'
		1. j			'small'	HL t	'dog': HL t -j 'pup'
		2. LH jaq		'child'
		1. ka			'child'
		Female	Male	Examples
	Púm!	mã		pu
		mae		1. Np e
				2. bu
	(6) Directional Prefixes:

H t 'dog': LH t -ka 'pup' H wu-li 'cat': LH wu-ka 'kitten'

2. t (WT phrug) 'child' H wu-li!'cat':! LH wu-t 'kitten'

(iii) Gender suffixes for animals (in Kami, prefixes):

LH m ts 'cat': LH m ts -mã 'female cat' L k LH d a 'dog': H k i -mã 'bitch, female dog'; LH k i -pu 'male dog' Lizu HL t e 'dog': HL t e-ma 'bitch, female dog'; HL t e-Np e 'male dog' LH muts 'cat':

  In addition, patient nominalizers in Lizu and Sh!x$ng have distinct past and non-past forms, namely, in Lizu: (a) past -mi, e.g. LH ne-dz = LH mi 'those that have been eaten', and (b) non-past -ly, e.g. LH dz -ly 'edibles, things to eat'. In Sh!x$ng: (a) past -li, e.g. H d õ=li LH õ i LH bi -ts 'rice and bacon that he used to have', and (b) non-past -g , e.g. LH dz =g 'edibles, things to eat'.

		Past stem	Non-past stem
	Púm!	HL	HL
	Lizu	LH da	LH ji
	Nàmùz"	h 55	bie 35
	Sh!x"ng	LH x	LH bi
	Kami	H s (song)
	Existential verb	Púm!	Lizu	Nàmùz"	Sh!x"ng
	to have, to possess	HL bõ 51	LH bo	bo 55	LH d õ
	to exist (of animate entities)	HL	H d o	d o 55	LH j
	to exist (of inanimate entities)		LH ha	ndzae 31	LH d õ
	to exist (of movable entities)		LH d wa	31
	to exist (inside a container)	HL kui or HL tei	HL d		H k u
	to exist (attached to an entity)	HL diã			LH dzi
	to exist (of abstract entities)	LH i	LH nj	d 55 -gi 55

L Nd u!('gro) (8) Multiple existential verbs:

Lizu is held to be the western dialect of the %rs# language.

While Sh!x$ng is restricted in distribution to Mùl!, the remaining three languages are also spoken beyond

In Chinese historiographic sources, the label "Hsifan" mostly points to peripheral groups in the circumference of ethnic Tibet, sharing with ethnic Tibetan their religions and culture, but speaking their own languages. The same label is also occasionally used as a collective name for everything that is non-Chinese in the western periphery. The term is non-committal as to the genetic relationship between the groups in question, which, while most likely all Sino-Tibetan, are therefore for all purposes to be considered as not closely genetically related.

Púm! data are from GuillaumeJacques (p.c.) and[START_REF] Shàoz | Púmíy" F(ngyán Yánji% 《普米語方言研究》 [A Dialectal Study of the Púm! Language[END_REF]; Lizu and Sh!x$ng data are from personal research; Nàmùz$ data are fromHuáng and Rénz+ng (1991) and from personal research.

The demonstrative pronouns in the four languages are as follows: Púm! LH t bie 'this', LH ubie 'that'; Lizu H ku-t 'this', H wo-t 'that'; Nàmùz$ tae 55 =ly 55 'this', t ho 31 =ly 55 'that'; Sh!x$ng LH h 'this', LH t 'that'. Demonstratives in Nàmùz$ are obligatorily followed by the general classifier ly, the etymology of the second syllable of Lizu demonstratives is uncertain.

Conversely, a comparable degree of variation is possible in geographically discontinuous groups. For instance, in relation to the order of demonstrative and noun and differences in classifier use as evoked above, comparable examples can be found, respectively, among Chin languages, which combine Dem-N,

According toKessler (1986:20, 46), Mùl! has been settled by Tibetans since ca. 680 AD, i.e. after the unification of the Tibetans with the Hsifan nomadic tribes, who settled in the areas to the East of Tibet between 618 and 906 AD. However, it was only after 1253 that Mùl! formed the southeastern corner of the at that time still existing Tibetan empire.

The approach is that of numerical taxonomy in biology, based on the ideas of Michel Adanson and developed in[START_REF] Sokal | Qi"ngy) gàikuàng 羌語概況 [An outline of the Qi"ng language]. Zh&ngguó[END_REF]. Applied in linguistics, this approach is an excellent candidate for quantitative methods, such as NeighbourNet, which is argued to favor a phenetic, rather than a cladistic

This overview is based on the list of diagnostic morphological and syntactic similarities between Nàx$ and Moso in[START_REF] Zhúyí | Nàx$y) d(ngbù hé x$bù f"ngyán y)f& yìtóng gàikuàng 納西語 東部和西部方言語法異同概況 [Syntactic similarities and differences between Western and Eastern dialects of Nàx$]. Mínzú Y"wén 《民族語文》[END_REF], to which I added my Sh!x$ng data. Some additional features shared by Nàx$, Moso and Sh!x$ng are cited, for Nàx$ and Moso, from[START_REF] Jírén | B%ij$ng 北京: Mínzú Ch&b'nshè 民族出 版社[END_REF],[START_REF] Lidz | A synopsis of Yongning Na (Mosuo)[END_REF][START_REF] Zhenhong | An overview of the Mosuo language[END_REF]. Some similarities between Sh!x$ng and Na languages are also discussed in[START_REF] Sun | Approaching the prosodic system of Shixing[END_REF].

。該 假設認為中國西南地區的 13 種尚未得到充分研究的語言擁有一個共同的起源(即 它們具有親緣關係)。本研究通過對四川省木里藏族自治縣內的四種羌語支語言的 長時間實地調查及研究,並將其與相鄰的亞語族(彞語、納西語、藏語、漢語)作