Zhang Liao
Zhang Liao told Xiahou Yuan: "Over the past several days, whenever we attacked Chang Xi, I noticed he paid careful attention to me. He is also running short of arrows. I suspect he is having doubts, therefore he isn't doing his best to resist us. Wouldn't it be better if I manage to persuade him to surrender?" He then sent a message to Chang Xi and asked to speak to him. When Zhang Liao met Chang Xi, he told the latter that Cao Cao rewarded those who submitted to him. Convinced by Zhang Liao, Chang Xi agreed to surrender to Cao Cao. Zhang Liao then went to Chang Xi's home alone and visited his family. Chang Xi was delighted and he followed Zhang Liao and Xiahou Yuan back to meet Cao Cao.