Ran Min
In 349 or 350 CE (disputed), the Han general Ran Min (冉閔) seized power from the last emperor of the Zhao and encouraged the Han Chinese to slaughter the Jie people, many of whom lived in the Zhao capital of Ye. In this massacre and the wars that ensued, hundreds of thousands of Jie (羯), Qiang (羌), and Xiongnu (匈奴) were killed. The "five barbarians" quickly unified to fight Ran Min, yet Ran Min won victory after victory. Despite his military success, however, Ran's regime was toppled in 353 CE. As a result of this period of turbulence, three of the five main "barbarian" ethnic groups in China disappeared from Chinese history.