韓遂
In 211, when Ma Chao and other warlords in the Guanzhong region were planning to start a rebellion, they approached Han Sui and invited him to join them. Ma Chao even told Han Sui, "Previously, Zhong Yao ordered me to harm you. Now, I know that the people from Guandong (east of Tong Pass) cannot be trusted. Now, I abandon my father, and I'm willing to acknowledge you as my father. You should also abandon your son, and treat me like your son." Yan Xing advised Han Sui not to cooperate with Ma Chao but Han Sui still agreed to the alliance. Ma Chao, Han Sui and the warlords then engaged Cao Cao at the Battle of Tong Pass. During the battle, when Cao Cao requested to meet Han Sui, an old acquaintance of his, for a chat, Yan Xing accompanied Han Sui to the meeting. Cao Cao pointed at Yan Xing and told Han Sui, "Take good care of this filial son."