Western Yunnan, China (Google Maps ⧉, OpenStreetMap ⧉)

"trade between Sze-ch’wan on one side, and Tibet and Western Yunnan on the other."

"…in 1855 began their revolt against the imperial authority, which for a time resulted in the establishment of their independence in Western Yun-nan under a chief whom they called Sultan Suleiman."

"referenced in Anderson’s Report on Expedition to Western Yunnan"