Chāngzhōu

Changzhou was a native department in the Anning River valley of southwestern Sichuan. In 1286 it became the seat of the Yuan Dechang Route, governed from Gelu city in the land of the Qu people.

In 1382 the Ming placed Changzhou under Dechang Prefecture. In 1404 they converted the department into the Changzhou Chief's Office, leaving hereditary native officials to rule under a new title.