淝水之戰
The [[War of the Eight Princes]] during the [[Jin dynasty (266–420)]] triggered a large-scale Southern Xiongnu uprising after 304, which resulted in the sacking of the Chinese capitals at [[Luoyang]] (311) and [[Chang'an]]. The Xiongnu Kingdom of [[Han Zhao]] captured and executed the last two Jin emperors as the Western Jin dynasty collapsed in 317. Many Chinese fled south of the [[Yangtze]] as numerous tribesmen of the Xiongnu and remnants of the Jin wreaked havoc in the north. [[Fu Jian (337–385)]] temporarily unified the north but his achievement was destroyed after the [[Battle of Fei River]]. The [[Northern Wei]] unified North China again in 439 and ushered in the period of the [[Southern and Northern Dynasties|Northern Dynasties]].