Yuan Shao picked up the guy fat and beat Cao Cao, and Cao Cao was forced to fight in Guandu. At this time, Cao Cao's soldiers were not counted, and the key was that the military food was almost exhausted. At the critical moment of life and death, Cao Cao's early friend, Yuan Shao's adviser Xu You, abandoned Yuan Yuan and surrendered to Cao. Cao Cao heard that Xu You had come to join him, and came out barefoot to greet Xu You. Xu You told Cao Cao where Yuan Shao stored the military grain, and asked Cao Cao to lead someone to burn Yuan Shao's military food. Yuan Shao's horse boy had nothing to eat and could only retreat.
At that time, if there was no Xu Youxian plan, Cao Cao would be KO by Yuan Shao, and the Cao Wei Group would be finished. Xu You can be said to be a hero of the Cao Wei clique and a savior of Cao Cao, Xu You's self-esteem is high, plus Cao Cao's barefoot greeting Xu You, giving Xu You enough face. Xu You forgot that Cao Cao was his leader, and he often said to Cao Cao: "Ah Qi, without me xu someone, you can't win Yuan Shao, you won't have a good life today, you have to thank me very much."
Xu You was no big or small, he called Cao Cao's nickname directly, and Cao Cao's heart was full of ten thousand grass and mud horses whizzing by, but his mouth wanted to show that Xu You was right. Cao Cao's love saw Xu Chu in his eyes and remembered it in his heart. When Cao Cao attacked Yecheng, Xu You said, "Without me allowing someone, Cao Ah would have been able to enter Yecheng without me?"
Xu Chu seized the opportunity and angered Xu You. Xu Youyue said that it was too much, and Xu Chu saw that the time was ripe and slashed Xu You with a knife. Xu Chu carried Xu You's head to see Cao Cao, and Cao Cao felt beautiful in his heart, but pretended to be very angry and scolded Xu Chu. Xu Chu replied: "Kill people to pay for my life, pay off debts, I cut off Xu You's head, just pay him back a human head, one person does things and one person is responsible, please cut off my head and pay for Xu You's life."
Cao Cao pretended to be angry, counted Xu You's merits, and ordered Xu Chu to be beheaded. Cao Pi knew that his father and Xu Chu were playing double reeds, so he came forward to intercede for Xu Chu. Cao Wei's advisers and military generals also interceded one after another, and Cao Cao pushed the boat along the water, sparing Xu Chu the death penalty. Cao Cao ordered Xu Chu to compensate for the funeral expenses and gave Xu You a high-end and high-grade funeral. Cao Cao also revoked Xu Chu's titles and official positions, and directly demoted Xu Chu to the rank of mafu. At the time of Xu You's funeral, Cao Cao personally went to mourn the filial piety and ordered Xu Chu to wear ma dai filial piety for Xu You and kneel down to weep and worship. Xu Chu killed Xu You, Cao Cao skimmed his responsibilities clean, and the black cauldron was left to Xu Chu's back. There is a saying that "it is better to help the leader do a hundred good things than to carry a black pot for the leader." After Xu Chu carried this black cauldron for Cao Cao, he was soon reinstated as an official, and he was even more appreciated and reused by Cao Cao.