At the end of the Eastern Han Dynasty, Liu Bei failed in his crusade against Cao Cao and defected to Liu Biao in Jingzhou. In order to make greater achievements in the future, he paid attention to recruiting talents and was recommended by Si Mahui, a celebrity in Jingzhou. Si Mahui said: "There are Long Fu and Feng Chu here. If they get one, they can ensure the security of the world." Liu Bei inquired in many ways and learned that "Long Fu" was Zhuge Liang. He lives in seclusion in Longzhong, 20 miles west of Xiangyang City, and lives in a thatched cottage, cultivating self-cultivation and studying history books intensively. He is an outstanding talent, so he made a special trip to visit Longzhong.

He went there three times, the first two times Zhuge Liang avoided seeing him, and the third time he personally greeted him. In the thatched cottage, he and Liu Bei discussed the current situation, analyzed the situation, and designed a general plan for seizing political power and unifying the world. Liu Bei was greatly impressed, and he was willing to accept Zhuge Liang as his teacher and ask him to come out of the mountain to help him revive the Han Dynasty. Zhuge Liang was deeply moved by Liu Bei's sincerity to "visit the thatched cottage" and agreed to Liu Bei's request to leave Longzhong to show his political ambition.

Since then, Zhuge Liang has become Liu Bei's main counselor, helping Liu Bei to unite with Sun Wu in the east, explore Cao Wei in the north, occupy Jing and Yi States, establish the northern Shu and Han regime, and form a tripartite confrontation with Dongwu and Cao Wei.