Superfamily of languages whose two branches are the Sinitic or Chinese languages and the Tibeto-Burman family, an assemblage of several hundred very diverse languages spoken by about 65 million people from northern Pakistan east to Vietnam, and from the Tibetan plateau south to the Malay Peninsula. Western Tibeto-Burman languages include Tibetan and the Bodish and Himalayan languages, spoken mainly in Nepal. Tibeto-Burman languages of northeastern India include the Bodo-Garo languages (spoken in Assam) and the northern Naga languages of Nagaland; perhaps allied to these is Jinghpaw (Jingpo), spoken in northern Myanmar. Kuki-Chin and southern Naga languages are spoken in eastern India, eastern Bangladesh, and western Myanmar. Central Tibeto-Burman languages are spoken mainly in Arunachal Pradesh in India and in adjacent parts of China and Myanmar; they include Lepcha, an official language of Sikkim. Northeastern Tibeto-Burman comprises a heterogeneous group of languages spoken in western Sichuan and northwestern Yunnan in China. Burmese-Lolo, a geographically wide-ranging subgroup, includes Burmese, the national language of Myanmar (Burma). Loloish languages include the speech of the Yi or Lolo of Yunnan as well as several languages spread over Yunnan and parts of Southeast Asia, including Lahu and Akha. Karen, spoken by the Karen of Myanmar and Thailand, forms a distinct subgroup. Tibetan and Burmese are the only Tibeto-Burman languages with long literary traditions. Burmese is written in an adaptation of the Mon script (see Mon-Khmer languages)
The original language, or rather, cluster of dialects, from which descend the Sino-Tibetan family of languages, to include Tibeto-Burman group and the various Chinese languages; the exact phylogenetic relationships remain subject to scholarly debate