Gongsun Yuan
In 232, Cao Rui wanted to order Tian Yu and Wang Xiong (), who were respectively the governors of Ping and You provinces, to lead their troops to attack the Liaodong region, which was then ruled by the warlord Gongsun Yuan, a vassal of the Cao Wei state. Tian Yu and Wang Xiong would lead their forces to attack Liaodong via sea and land respectively.