463,000 in China (2003).
Area where west Hunan Province and north Guangxi Zhuang Autonomous Region meet, southeast Guizhou (Yuping autonomous county); Guangxi Zhuang Autonomous Region, 20 contiguous counties. Also in Viet Nam.
Zhanglu speech in Rongjiang County, Guizhou Province is standard variety. Reportedly similar to Mulam [mlm]. Lexical similarity: 80% with Northern Dong varieties, 71% with Southern Dong [kmc], 46% with Lakkia [lbc], 29% with Qabiao [laq], 26% with Hlai [lic], 24% with Gelao, 22% with Lachi [lbt], 6% with Hmong Njua [hnj], 4% with Iu Mien [ium].
Tonal, 9 tones
Vigorous. All domains. All ages. Also use Mandarin Chinese [cmn].
Officially classified within Dong nationality. Ethnic autonym: Kam; Dong is the Chinese name. Traditional way of life relatively undisturbed. Traditional religion.