12 military units to support him. Guan Yu's encirclement was made up of five camps – one main camp leading the siege and four supporting camps. Xu Huang deliberately spread news that he was going to attack the main camp to trick Guan Yu into strengthening his defences at the main camp. In the meantime, he secretly sent his forces to attack the four supporting camps and succeeded in destroying them. When Guan Yu saw that the four camps were down, he personally led 5,000 troops to engage the enemy. Xu Huang launched a fierce attack on Guan Yu and succeeded in defeating him and lifting the siege on Fancheng. During Xu Huang's attack, many of Guan Yu's soldiers panicked and fled towards the nearby Han River, where they drowned. When Cao Cao heard of the victory, he praised Xu Huang: "The enemy formation was very thick, yet you managed to achieve victory and destroyed their camps and killed so many of their men. I have fought in battles for over 30 years, but I have never heard of any person in history who attempted to break a siege by launching a direct attack on the enemy's encirclement. The situation at Fancheng and Xiangyang was much worse than that at Ju and Jimo. Your achievements are comparable to those of Sun Wu and Rangju." The Shu Ji (蜀記) recorded an incident about Xu Huang meeting Guan Yu on the battlefield. Xu Huang had a close personal friendship with Guan Yu. They often chatted about other things apart from military affairs. When they met again at Fancheng, Xu Huang gave an order to his men: "Whoever manages to take Guan Yunchang's head will be rewarded with 1,000 jin of gold." Guan Yu was shocked and he asked Xu Huang: "Brother, what are you talking about?" Xu Huang replied: "This is an affair of the State." Upon Xu Huang's return, Cao Cao went seven li out of Xuchang to greet him, giving him full credit for securing Fancheng and Xiangyang. Throughout the field reception, the soldiers of other commanders shifted about in order to get a better view of Cao Cao, but Xu Huang's men stood stationary in neat files. Seeing this, Cao Cao remarked: "General Xu has truly inherited the style of Zhou Yafu." Service under Cao Pi and Cao Rui Following Cao Cao's death in March 220, his son Cao