Everyone says that Zhuge Liang knows astronomy above and geography below. Everything is confidential, but I don't think so. Can you tell me his mistake?

Zhuge Liang is recognized as the first counselor of the Three Kingdoms, but no one is perfect. Zhuge Liang also made several mistakes:

Zhuge Liang told the arrogant Guan Yu to guard Jingzhou. Even though Guan Yu was reminded that "Cao Cao was rejected in the north and Sun Quan in the east", Guan Yu refused Sun Quan's marriage, saying that "tiger girls don't marry dogs", which led to the defeat of Maicheng and the fall of Jingzhou, which was a loss.

Second, Liu Bei advised Kongming in Baidicheng that Ma Su had no real talent and learning, but Zhuge Liang finally let Ma Su guard the street pavilion, which led to the withdrawal of the whole army. This is the second failure.

Zhuge Liang is in charge of Shu Han's affairs, and he is in charge of everything alone. It seems that he devoted all his efforts, but to a certain extent, it hindered the development of talents in Shu and Han, and also hurt his health, leading to the final "there is no general in Shu, and Liaohua is the pioneer", and Kong Ming himself fell ill. These are three missing. Zhuge Liang is recognized as the first counselor of the Three Kingdoms, but no one is perfect. Zhuge Liang also made several mistakes:

Zhuge Liang told the arrogant Guan Yu to guard Jingzhou. Even though Guan Yu was reminded that "Cao Cao was rejected in the north and Sun Quan in the east", Guan Yu refused Sun Quan's marriage, saying that "tiger girls don't marry dogs", which led to the defeat of Maicheng and the fall of Jingzhou, which was a loss.

Second, Liu Bei advised Kongming in Baidicheng that Ma Su had no real talent and learning, but Zhuge Liang finally let Ma Su guard the street pavilion, which led to the withdrawal of the whole army. This is the second failure.

Zhuge Liang is in charge of Shu Han's affairs, and he is in charge of everything alone. It seems that he devoted all his efforts, but to a certain extent, it hindered the development of talents in Shu and Han, and also hurt his health, leading to the final "there is no general in Shu, and Liaohua is the pioneer", and Kong Ming himself fell ill. These are three missing.