Mángbù
Mangbu lay in the mountains north of Zhenxiong, in the borderlands of Yunnan, Sichuan and Guizhou. Its hereditary Yi rulers governed the district as a prefecture under the Yuan and Ming. Later the Ming reorganised the territory as Zhenxiong and appointed officials, while members of the Long chiefly family continued to govern neighbouring chieftaincies. The changes brought imperial and hereditary authorities into close and sometimes uneasy contact.