In 219, Guan Yu was given the title of former general for his meritorious service in Jingzhou, and after that, Guan Yu led the generals of Jingzhou to besiege Xiangfan. This move is actually a continuation of Hanzhong, after all, in the Battle of Hanzhong, Liu Bei raised the strength of Yizhou to resist Cao Cao, but he was also seriously injured, at this time Guan Yu besieged Xiangfan, which could effectively contain the main force of Cao's army, if Cao Cao did not react in time, he was afraid that Xiangfan would still have the danger of being breached. Under such circumstances, Cao Cao immediately sent the Seven Roads Army to Fancheng for reinforcements. However, Yu Ban was very unfamiliar with the local climate and geographical environment, and he mistakenly stationed the large army in a low-lying place, so guan Yu flooded the Seventh Army and killed Pound, and Yu Ban could only surrender to Guan Yu under such circumstances. For a time, not only Guan Yu's momentum shocked Huaxia, but also Shu Han's momentum reached its peak. However, after this, Guan Yu was defeated by Maicheng due to the enemy's belly and lack of grain and grass, and in the process of breaking through, he was captured by Eastern Wu and killed, and Jingzhou was also occupied by Eastern Wu.
It has to be said that although Guan Yu made great contributions to the Shu Han regime established by Liu Bei, he also caused great harm to Shu Han because of his own negligence, and it was precisely because Guan Yu lost Jingzhou that Shu Han would struggle so hard in the later northern expedition. In addition to Guan Yu, Zhang Fei was the same, in the Battle of Changshanpo that year, Zhang Fei broke the bridge according to the water, and through personal bravery, he repelled Cao Wei's five thousand tigers and leopards, which won a chance for Liu Bei to breathe. However, Zhang Fei had let Liu Bei lose Xuzhou, and later before Liu Bei decided to go on a crusade, Zhang Fei was also killed by his men due to personal character problems, making it difficult for Liu Bei to attack Eastern Wu in two ways, indirectly causing a disastrous defeat at the Battle of Yiling. Since Guan Yu and Zhang Fei brought benefits and harm to Liu Bei, did Liu Bei "succeed in closing Zhang, and failing to close Zhang?"
In fact, subjectively speaking, guan yu and Zhang Fei's gains and losses should not be measured by this utilitarian idea. Liu Guanzhang's three people should be more like the three brothers in the yanyi, rather than a simple master-servant relationship, Liu Bei at the beginning of the rise, Guan Yu and Zhang Fei followed Liu Bei, not because the two from then on, knew that Liu Bei would definitely cross the land of Jing and Yi in the future, and could occupy Hanzhong and achieve the imperial cause, nor did they know that they could become generals in the future, for them, the initial idea was just to work with Liu Bei to eliminate violence and establish merits.
Because of this, whether it is Guan Yu or Zhang Fei, they are more like living people than cold name code names, and the monarchs of shu Han are therefore more worthy of people's love, appreciation and admiration, so even if they make mistakes, they are worthy of people's affirmation.
The author believes that for Liu Bei, his success stems from Guan Zhang, but for his failure, there are actually many reasons, and you can't just blame Guan Zhang.