Kam–Sui languages

[5] Cao Miao and Naxi Yao, which are closely related to Southern Dong, have also been added from Shi (2015).

[6] Mulam Kam (Dong), Cao Miao, Naxi Yao Then Maonan Chadong[5] Sui Mak Ai-Cham[7] Peter Norquest (2021:234) presents another classification for the Kam–Sui branch.

[8] Nearly all speakers of Kam–Sui languages originate in the Qiandongnan (Dong) and Qiannan (Sui, Then, Mak, Ai-Cham) Prefectures of Guizhou, as well as the prefecture-level cities of Hechi (Mulam and Maonan) and Guilin (Chadong) in northern Guangxi.

The four largest Kam–Sui ethnic groups, the Dong, Shui, Mulao, and Maonan, are officially recognized by the Chinese government.

[26] Kam–Sui languages are also in contact with Suantang 酸汤, a Sinitic language spoken by about 80,000 ethnic Miao in Baibu 白布, Dihu 地湖, Dabaozi 大堡子, and Sanqiao 三锹 in Tianzhu, Huitong, and Jing counties (Chen Qiguang 2013:35).