Outline of the Romance of the Three Kingdoms Part XI
In the name of revenging his father, Cao Cao led troops to kill Xuzhou, leaving Xuzhou in a dilemma. Mi Zhu begged Liu Bei to save Xuzhou, so Liu Beixian wrote to Cao Cao to stop fighting.
Cao Cao was discussing this matter with people. It was reported in Yanzhou that Lu Bu attacked Yanzhou (this is Cao Cao's base area, and Lu Bu copied Cao Cao's base area because of Chen Gong's advice, which forced Cao Cao to retreat to the second place), so Cao Cao gave in and retreated to Yanzhou. But Xuzhou people don't know that Cao Cao's withdrawal is famous by Liu Bei's letter. Tao Qian thought he was a talented person, so he kept him again and again. Liu Bei therefore promised to stay in Xiaopei near Xuzhou.
Cao Cao retreated to Li's rescue and didn't want to be ambushed by Lu Bu on the way. In the end, Dian Wei saved Cao Cao's life by killing the enemy with one enemy and ten enemies.