Coordinates: 35°36′N 103°12′E / 35.600°N 103.200°E
Dongxiang Autonomous County (simplified Chinese: 东乡族自治县; traditional Chinese: 東鄉族自治縣; pinyin: Dōngxiāngzú Zìzhìxiàn) is an Autonomous County in the Linxia Hui Autonomous Prefecture, province of Gansu of the People's Republic of China. With ethnic minority of the Dongxiang.
Dongxiang Autonomous County contains the town of Tangwangchuan.
A town called Tangwangchuan (唐汪川) in Dongxiang Autonomous County had a multi ethnic populace, the Tang 唐 and Wang 汪 families being the two major families. The Tang and Wang families were originally of non Muslim Han Chinese extraction, but by the 1900s some branches of the families became Muslim by "intermarriage or conversion" while other branches of the families remained non Muslim.
People in the area have changed their ethnicity by marrying members of other groups or converting to their religion. The Tang and Wang families are now composed of all three different ethnic groups, with Han Chinese, Hui, and Dongxiang people. The Dongxiang and Hui are Muslims.