Mu'ege (Nasu: m̍33 ɣʊ31 ɡɯ55; Chinese: 慕俄格) was a Nasu Yi chiefdom in modern Guizhou that existed from 300 to 1698. Since 1279, Mu'ege was conquered by the Yuan dynasty and became Chiefdom of Shuixi (Chinese: 水西土司; pinyin: Shǔixī Tǔsī) under the Chinese tusi system. Shuixi was one of the most powerful clans in Southwestern China; the chiefdoms of Bozhou, Sizhou, Shuidong, and Shuixi are collectively called the "Four Great Native Chiefdoms of Guizhou" (貴州四大土司) in Chinese historiography. In 1698, it was fully annexed into the central bureaucratic system of the Qing dynasty.