Tusi

'''''' (; '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. As succession to the Tusi position was hereditary, these regimes effectively formed numerous autonomous petty dynasties under the suzerainty of the central court. This arrangement is known as the Tusi System or the Native Chieftain System

Tibetan kingdom and chieftain in Kham from the 15th to 20th century