Yánjǐng

Yanjing, named for its salt wells, was a Mosha polity in the Yanyuan basin of southwestern Sichuan. Under the Yuan, Boxing Prefecture had been established at Runyan in 1290.

The Ming established the Yanjing Guard in 1393 and the Mala Chief’s Office in 1407. Under the Qing, the guard became Yanyuan County under Ningyuan Prefecture in 1728, while native offices such as the Zuosuo chiefs continued to govern the surrounding hills.