Sanmiao tribe
Sanmiao (Chinese: 三苗) was a legendary tribal confederation or state said to exist in ancient China. It was formed by the descendants of the Jiuli tribe, dismantled after the Battle of Zhuolu in 2,500 BC.
Their kingdom consisted of three distinct groups, led by three rulers. It rebelled against several Han emperors. They were persecuted and subjugated by Emperors Yao and Shun, thus being classified as one of the Four Perils and nicknamed with the derogatory term "Miao".
The Sanmiao tribes were officially defeated by Yu the Great during the first rule of the Xia dynasty, in the end of the 20th century BC.