The Battle of Fei River or “Feishui” () was a battle in 383, where Fu Jiān () of the Di Former Qin Empire was decisively defeated by the numerically inferior Jin (Han Chinese-lead) army of Eastern Jin. (The location of the battle, the Fei River, no longer exists, but is believed to have flowed through modern Lu'an, Anhui, near the Huai River). The battle is considered to be one of the most significant battles in the history of China. The aftermath of the battle includes the Former Qin empire falling into massive civil war and its eventual destruction, ensuring the survival of Eastern Jin and other Chinese regimes south of the Yangtze River (Chang Jiang).