- Wuhuan
The Wuhuan (zh-tsp|t=烏桓|s=乌桓|p=Wūhuán) were a nomadic people who inhabited northern
China , in what is now the provinces ofHebei ,Liaoning ,Shanxi , the municipality ofBeijing and the autonomous region ofInner Mongolia .They were descended from the
Donghu , who were defeated by theXiongnu .They were active throughout the latter half of the
Han Dynasty , often incorporated into the regular military forces of the Han armies. Unlike most major non-Chinese peoples on the frontiers of the Chinese empire, the Wuhuan were relatively cooperative with the imperial court. Around the fall of the dynasty in the 190s, however, the Wuhuan joined in many of the rebellions and internal wars of the Chinese. In the 200s, the "Wuhuan of the three commanderies", the tribes closest to the Chinese, supportedYuan Shao , the major warlord north of theYellow River . In 207,Cao Cao led a forced march deep into Wuhuan territory and decisively defeated them at Mount Bolang. Many Wuhuan's powerful horsemen joined him and became known as the "greatest cavalry under heaven". Although various Wuhuan leaders led sporadic revolts throughout the third century, by the fourth century they had largely been displaced by theXianbei .
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