208 A.D. , Cao Cao personally led the army to Jingzhou. Liu Wei did not fight and fell. After Liu Bei discovered it, he sent a person to ask Liu Wei, Liu Yuling, Song Zhongzhao, and Liu Bei. At that time, Cao Caojun had already arrived in Wancheng. Liu Bei was shocked and stunned Song Zhong, and he fled.
At this time, Zhuge Liang and others persuaded Liu Bei to attack Liu Wei, occupying Jingzhou, and thus relying on the city to resist Cao Jun, but Liu Bei ended up because Jingzhou was Liu Bian’s foundation and could not bear to win. Many Jingzhou people have abandoned Liu Wei to rely on Liu Bei, and more than 100,000 people are willing to follow Liu Bei to escape. On the other hand, Liu Bei sent Guan Yu to the water army and headed for Jiangling from the waterway.
In September, Cao Cao heard the news of Liu Bei’s escape. He was afraid that Liu Bei would first occupy Jiangling, so he sent Cao Chun’s collar to ride the five thousand to attack jiangling and catch up with Liu Beijun near Dangyang.