The Bonan speak an Altaic language related to Mongolian and Dongxiang and are predominately Muslim. [1] (http://www.paulnoll.com/China/Minorities/min-Bonan.html) They are believed to be descended from Muslim Mongol soldiers stationed in Qinghai during the Yuan or Ming dynasties and to have settled in Gansu during the reign of the Tongzhi Emperor (1862-1874).