troops to attack Liu Biao in Jing Province (covering present-day Hubei and Hunan). Meanwhile, Yuan Shang battled with his brother, and forced Yuan Tan to flee to Pingyuan (), where Yuan Shang laid siege. Since Yuan Shang's attack was so intense, Yuan Tan had no other way but to send out Xin Pi to seek alliance with Cao Cao. Cao Cao agreed and even arranged a marriage between one of his sons and Yuan Tan's daughter. As Cao Cao was moving north, Yuan Shang was forced to lift the siege and returned to Ye, but en route to Ye, Yuan Shang was defeated and fled to Zhongshan. The brothers Lü Kuang () and Lü Xiang (), who served under Yuan Shang, surrendered to Cao Cao and were enfeoffed as marquises. While Cao Cao was laying siege to Ye, Yuan Tan took the opportunity to attack Yuan Shang, and forced the latter to seek refuge alongside his second brother, Yuan Xi, who at that time was the Inspector of You Province. During Yuan Shang's stay in You Province, a mutiny broke out, and the two brothers were then forced to flee to Liaoxi, where the Wuhuan tribes resided. In 207, the Yuan brothers, along with the Wuhuan leader Tadun, fought at the Battle of White Wolf Mountain against Cao Cao. During the battle, the unit of Tadun was surprise-attacked by Cao Cao's vanguard, Zhang Liao, and the allied forces was soon defeated after the capture of Tadun. Death This time Yuan Shang and Yuan Xi fled to Liaodong, where they planned to take shelter under the warlord Gongsun Kang. However, they were betrayed by Gongsun Kang, who executed them and sent their heads to Cao Cao. See also Lists of people of the Three Kingdoms References Chen, Shou (3rd century). Records of the Three Kingdoms (Sanguozhi). Fan, Ye (5th century). Book of the Later Han (Houhanshu). Pei, Songzhi (5th century). Annotations to Records of the Three Kingdoms (Sanguozhi zhu). Sima, Guang (1084). Zizhi Tongjian. 207 deaths 2nd-century births 3rd-century executions Executed Han dynasty people Generals under Yuan Shao Han dynasty warlords Officials under Yuan Shao People executed by the Han dynasty by decapitation Political office-holders in Hebei