Yuan Tan
Yuan Shang soon led a force to attack his brother again but retreated after he had heard the news of Cao Cao's siege on Ye. His returning force tried to converge with that in the city but the attempt was foiled. The defeated Yuan Shang then escaped to Zhongshan, and was attacked by a vengeful Yuan Tan. Merging Yuan Shang's surrendered troops into his own, Yuan Tan violated the alliance with Cao Cao by taking Ganling (present-day Qinghe County, Hebei), Anping County, Bohai Commandery (vicinity of present-day Cangzhou, Hebei) and Hejian into his realm. Cao Cao soon turned his force against Yuan Tan, who retreated to Nanpi. In 205, Yuan Tan was eventually defeated and killed in action in the Battle of Nanpi against Cao Cao.