Sinitic, often referred to simply as ‘Chinese’, is a well-differentiated major branch of the Sino-Tibetan family, further divided into ten commonly recognized groups (Mandarin, Jin, Wu, Gan, Xiang, Hui, Hakka, Yue, Min, and Pinghua), identified mainly on the basis of phonological criteria. Sinitic as a whole stands out for being typologically quite distant from the rest of Sino-Tibetan (i.e., the so-called ‘Tibeto-Burman’ languages). Sinitic languages overwhelmingly possess verb-medial basic constituent order and isolating/analytic morphology, while Tibeto-Burman languages are dominantly verb-final and exhibit more complex and varied morphological profiles. Moreover, the Sinitic languages themselves show a considerable degree of internal variation, involving aspects such as word order, morphology, and grammaticalization patterns, among others. The development of Sinitic has often been driven by contact, both within the family and with unrelated (non-Sinitic) languages. For instance, Northern Sinitic shows ‘Altaic’ features due to contact with Mongolic, Turkic, and Tungusic languages, while Southern Sinitic is closer to the Mainland Southeast Asian areal type due to contact with Tai-Kadai, Hmong-Mien, and Mon-Khmer. We also find Sinitic varieties in the Northwest possessing basic verb-final order and postposed markers of case and evidentiality, again due to contact (with Mongolic and Tibetic), as well as other areas of convergence, which contribute to the complexity of the typology of Sinitic.
Arcodia et al. (Tue,) studied this question.