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.
Tangwangchuan and Hanjiaji were notable for being the lone towns with a multi ethnic community, with both Non Muslims and Muslims.
The Guomindang official Ma Hetian visited Tangwangchuan and met an "elderly local literatus from the Tang clan" when he was on his inspection tour of Gansu and Qinghai.
In the local music of Hezhou/Linxia, a Hui and Han song called "Hezhou" contains the verse "tang wang chuan you yi ge" (唐汪川有一个) in its third Ling.
^University of Cambridge. Mongolia & Inner Asia Studies Unit (2002). Inner Asia, Volume 4, Issues 1-2. The White Horse Press for the Mongolia and Inner Asia Studies Unit at the University of Cambridge. p. 119. Retrieved 17 July 2011.(Original from the University of Michigan)
^Martin Hartmann (1921). Zur Geschichte des Islam in China. Volume 10 of Quellen und Forschungen zur Erd- und Kulturkunde. W. Heims. p. 14. Retrieved 17 July 2011.(Original from the University of Michigan)