Liu Bei spent the first half of his life wandering, first taking refuge in his elder brother Gongsun Zan, then in the Central Plains, and then in Kong Rong, Yuan Shao, Tao Qian, Liu Biao and Hou Wenlv. It can be said that he is in a state of hidden dragon in the deep. After Battle of Red Cliffs, relying on Zhuge Liang's excellent planning and Liu Bei's decisive political leadership, he skillfully borrowed Jingzhou first, then entered the surprise state, and achieved the great cause of Shu and Han.
Liu Bei's Jingzhou was borrowed from Soochow at that time. He said he had no territory and wanted a place to live. The Dongwu regime lent it to him to help the Allies. But Jingzhou is Liu Biao's inheritance, and Liu Bei and Liu Biao are related by blood, so Liu Bei felt that the territory itself was his home, so he sent his good brother Guan Yu to guard the portal. The minister of civil and military affairs of Soochow was very unhappy when he saw it. Therefore, Monroe, then the satrap of Soochow, took advantage of Guan Yu's unprepared and crossed the river in white.
Jingzhou fell and his good brother died. Of course, Liu Bei wanted to get the venue back, so he raised the soldiers of the whole country and attacked the Dongwu regime. Zhuge Liang earnestly advised him, but Liu Bei's heart was firm, and Zhuge Liang sighed helplessly. "If the law is filial, it will definitely discourage the emperor from going east." The meaning of this sentence is that if Fa Zheng is still there, then Liu Bei's crusade will definitely be discouraged, which also shows that Zhuge Liang lacks confidence in Liu Bei's crusade, because there are not many top counselors who can join the army in Shu Han, and most of them have to stay in Hanzhong to guard against Cao Wei. In this case, the Crusaders ran out.