The 漢藏語系, or Sino-Tibetan language family, is a major language group that includes languages spoken in East Asia, Southeast Asia, and parts of South Asia. It is primarily divided into two branches: the 漢語 (Chinese languages) and the 藏緬語 (Tibeto-Burman languages). The most widely spoken language in this family is 普通話 (Mandarin), which is the official language of 中國 (China). Languages within the 漢藏語系 share certain linguistic features, such as tonal systems and specific grammatical structures. This family includes numerous languages and dialects, with over a billion speakers worldwide. The diversity within the family reflects the rich cultural and historical contexts of the regions where these languages are spoken.