LocationLao Cai, Yen Bai, Cao Bang, Ha Giang, and Lai Chau provinces.
Alternate NamesBo-I, Bo-Y, Bouyei, Buyi, Chang Chá, Chung Cha, Cùi Chu, Dang, Dioi, Giai, Giang, Nhaang, Niang, Nyang, Pau Thin, Pu-I, Pu-Nam, Pui, Puyi, Pú Nà, Sa, Trong Ggia, Tu-Dìn, Xa Chung Chá, Yai, Yay