Before meeting Zhuge Liang, Liu Bei had been wandering for half his life but had no foothold, and the two enemies of Qi Yu and Zhang Fei lived a life under the fence. The main reason for this situation is that he lacks a real wisdom tank, so when Mr. Shui Jing recommended Zhuge Liang to him, he would go to great lengths and insist on inviting Zhuge Liang out of the mountain. Liu Bei placed high expectations on Zhuge Liang, and Zhuge Liang did not live up to his trust, successively capturing Jingzhou and Yizhou for Liu Bei, Liu Bei was eventually proclaimed emperor, and Zhuge Liang was the greatest.
After Liu Bei's death, Zhuge Liang gathered military and political power in one, but he did not have any second thoughts, and he always did his best to assist Liu Chan, and went out to the Northern Expedition several times, and finally died of illness in Wuzhangyuan. Zhuge Liang, as the embodiment of loyalty and wisdom, was almost impeccable in his life, but if he studied carefully, he had some problems in understanding people, the most typical representatives of which were Ma Chen and Wei Yan. Ma Mo, a paper-talking strategist, was entrusted with the heavy responsibility of guarding the street pavilion, which eventually led to the loss of the street pavilion, the whole army fell into passivity, and Zhuge Liang was forced to sing an empty city plan to escape from danger.
If Zhuge Liang overestimated his ability, for Wei Yan Zhuge Liang was wearing colored glasses to see him from the beginning, the first time the two met, Zhuge Liang wanted to behead Wei Yan, on the grounds that he had a backbone behind his head. However, it turned out that Zhuge Liang was wrong, and the mistake was very serious, and Wei Yan had always been loyal to Liu Bei and made great contributions to the establishment of Shu Han. After the death of the Five Tiger Generals, Wei Yan became the most important military general of the Shu Han Dynasty, but because Zhuge Liang had always had prejudices against him, he eventually forced him to a dead end.
Compared with Ma Mo and Wei Yan, Zhuge Liang's mishandling of Liu Feng had disastrous consequences for the Shu state. Liu Feng was Liu Bei's adopted son, who made many meritorious contributions during Liu Bei's attack on Yizhou, and also had a brilliant performance in the Battle of Hanzhong, and together with Meng Da, he captured the three counties east of Hanzhong, such as Shangyong, Fangling, and Xicheng, and became a border general on the unified side. Compared with Liu Chan, Liu Feng's ability was not known how many times higher than his. Later, Guan Yu defeated Maicheng, Liu Feng did not send troops to rescue him, and Liu Bei did not punish him at that time, which shows Liu Bei's love for Liu Feng.
Later, Meng Da surrendered to Wei, and Xu Huang and others brought troops to fight Shangyong, and sent people to persuade Liu Feng to surrender, but Liu Feng beheaded the people who came to persuade him to surrender, and prepared to fight a decisive battle with Meng Da. Unexpectedly, Shen Yi rebelled at this time, and Liu Feng was defeated and returned to Chengdu under internal and external attacks. Zhuge Liang believed that Liu Fenggang was fierce and brave, and liu bei was afraid that it would be difficult for someone to control him after his death, so he persuaded Liu Bei to take this opportunity to get rid of him. In the end, Liu Bei put Liu Fengzhi to death. The Chronicle of the Three Kingdoms records that after Liu Feng's death, "the ancestors wept for it", which shows that Liu Bei regretted killing Liu Feng. Liu Chan's ability, Liu Bei is very clear, if Liu Feng does not die, it is not that there is no possibility of succession. If Liu Feng had succeeded him, with his ability, he would not have surrendered when Deng Aibing approached Chengdu, and the Shu state would not have died early.