Tusi
Tusi (Chinese: 土司; pinyin: Tǔsī; 'headmen, chieftains') were hereditary tribal leaders recognized as imperial officials by the Yuan, Ming, and Qing dynasties of China, and the Later Lê and Nguyễn dynasties of Vietnam. They ruled certain ethnic minorities in central China, western China, southwestern China, and the Indochinese peninsula nominally on behalf of the central government.