In order to be able to take the land of Hanzhong, Liu Bei tangled with Cao Cao for two years before he could tell the difference. Eventually, Liu Bei occupied Hanzhong and established himself as the King of Hanzhong. At that time, Guan Yu set out from Jingbei to force Fan Xiang, the purpose of which was to cooperate with Liu Bei to distract Cao Cao's attention. At that time, the Wei army had just withdrawn from Hanzhong, and the overall morale was very low.
The team led by Guan Yu in Jingzhou, the veterans are mostly very experienced in the battlefield. Therefore, Guan Yu was frequently successful in this operation. Cao Cao sent a lot of troops to support Fancheng, but heavy rains made Guan Yu's flooding of the Seventh Army plan successful. Guan Yu directly killed Pang Tong in this battle, took Yu Ban, and Guan Yu's prestige was further improved.
However, the good times did not last long, because Guan Yu refused to marry Sun Quan, which led to Sun Quan forming an alliance with Cao Cao, and finally Guan Yu heard the news that Jingzhou had been captured by Sun Quan in the process of continuing the attack. At this time, Guan Yu had fallen into a situation of back and forth, and finally Guan Yu died at the hands of Lü Meng. It is worth mentioning that when Guan Yu was caught in the middle of the attack, Liu Bei was only 20 miles away from Guan Yu, and if Liu Bei came to the rescue, he would definitely be able to come to the rescue, but when Guan Yu was killed, Liu Bei's reinforcements did not arrive.
Guan Yu's death had a great impact on the Shu state, and the Shu state also went into decline. So many people wondered, why is Liu Bei so close to Guan Yu and not go to the rescue? Later, Zhuge Liang said that he had broken the reason for this. Liu Bei did not expect that Sun Quan would rebel against the water, and when Liu Bei attacked Hanzhong, in order to stabilize the relationship between the two countries, he also deliberately returned the three counties of Jingnan.
However, no matter how good the relationship was, Guan Yu insulted Sun Quan's son again and directly made Sun Quan turn his face, and finally let Sun Quan and Cao Cao form an alliance. At the same time, although Liu Bei was very close, Guan Yu was too arrogant and did not ask Liu Bei for support in this situation. Therefore, Guan Yu's death was all because he was too arrogant, thus pushing himself to death.