信息不完整 “Ethnologue: Languages of the World, 16th Edition (2009)” . M. Paul Lewis · SIL International
濒危
20 percent certain, based on the evidence available
200
Speaker number data: (J. Edmondson 2002)
地点
Vietnam;
地点描述
Central and northeast, near the China border, Cao Bàng, Lang Son, Hà Giang, Tuye Quang, Bác Thái, Quang Ninh, Hà Bac, Lam Dòng provinces. Some settled south in Tung Nghia and Song Mao. Possibly also in Laos.
信息不完整 “World Oral Literature Project” .
濒危
20 percent certain, based on the evidence available