Han Sui
In 211, Han Sui joined Ma Chao and a coalition of warlords in the Guanzhong region to attack Cao Cao, the warlord who controlled the Han central government and the figurehead Emperor Xian. Both sides clashed at the Battle of Tong Pass, which resulted in a victory for Cao Cao. As Han Sui fled after the defeat, many of his men abandoned him but Chenggong Ying remained loyal and stayed with him. After Yan Xing, Han Sui's son-in-law, attempted to murder him, Han Sui felt so disillusioned that he wanted to retreat to Yi Province (covering present-day Sichuan and Chongqing) and take shelter under the warlord Liu Bei, a rival of Cao Cao. However, Chenggong Ying strongly objected as he felt that Han Sui should not simply abandon the power base he had built up over the years and become a vassal of another warlord. He urged Han Sui to take shelter under the Qiang tribes and wait for an opportunity to rise up again.