Zhuge Liang in the 50th Romance of the Three Kingdoms calculated Huarong Road and Guan Yunchang performed Cao Cao.

Historically, Liu Bei went to Huarong Road to intercept Cao Cao, but he came late and let Cao Cao escape. Luo Guanzhong's Romance of the Three Kingdoms was adapted, which not only reflected Guan Yu's great love and righteousness, but also reflected Zhuge Liang's strategizing and Liu's friendship. Zhuge Liang left Guan Yu to stay in Jingzhou because he had a high prestige in the army, and he was smart and brave. Let's take a look at Zhang Fei, the former Jingzhou general. Although he is brave and resourceful, his fatal weakness is that he loves to drink, easily causes trouble, and loves to whip soldiers (Fan Jiang and Zhang Da are examples, and Zhang Fei died because of heavy fighting). Zhao Yun: The prestige of the army is very low. Changbanpo was saved by Zhang Fei. He listened to Zhuge Liang too much and never took charge of military power. Guan Yu: Although arrogant, he is brave and good at fighting, and his military prestige is high. And Liu Bei sent Guan Ping to deliver the letter, which also suggested that Zhuge Liang asked Guan Yu to lead the troops in Jingzhou. It was difficult for Liu Bei to send troops back to Jingzhou in Chengdu, and Liu Bei knew that Guan Yu's attack on Xiangfan would get into trouble and suffer a little, so that he would not be arrogant in the future, but he did not expect to die. In my opinion, the battles of Xiangfan and Jingzhou are relatively important battles in the later period of the Three Kingdoms. The mystery of Guan Yu's physical death is not only described in the Romance of the Three Kingdoms, because Guan Yu was arrogant and did not adhere to the strategic policy of "uniting with Wu and rejecting Cao", which led to his carelessness in Jingzhou. This incident also reflects the internal political struggle in Shu and the internal contradictions of the power class.

At that time, after Liu Bei of Shu entered Sichuan, there were indeed various tensions in dealing with the relationship between the original troops (Zhang Zhao) and the newly recruited troops in Xichuan, as well as the relationship between counselors and soldiers. However, in the process of dealing with this tension, all aspects of internal affairs and diplomacy have not been coordinated in time. Guan Yu's defeat and death were the victims of political adjustment in this period. Why didn't Guan Yu save Zhuge Liang in Jingzhou? First, Guan Yu's Seventh Army flooded Xiangfan, causing chaos in the Central Plains. When the good news reached Shu, people rejoiced and thought that Guan Yu's prestige could be shaken. So everyone didn't consider Sun Quan's movements. After all, when he succeeds, he often ignores some factors. Even if he did, he should have thought that Sun Quan would take reviving the Han Dynasty as his career, and he should not stab himself and hold himself back at this time. After all, he is an ally of Shu Han and Dongwu.

Second, the Shu road is difficult. Even if a rescue team is sent, it will not arrive at the destination on time, and it will be 100% late. Therefore, it is difficult for Jingzhou Guan Yu Department, which is in danger every day, to persist.

Third, although Liu Da was stationed in the rescue, Liu Feng listened to Meng Da's words and did not go to the rescue on time, which directly led to Guan Yu's lack of breathing space and his defeat and capture.

Fourth, Zhuge Liang is just a politician and diplomat, and he is not really good at military affairs. He didn't expect Guan Yu to be so bad, and he didn't expect Guan Yu to ignore his parting message and ask him to be friends with Soochow.

Various factors led to Guan Yu's capture and death, not that Zhuge Liang could not save him.