Jianan twenty-four you, 219 A.D., in the people of the Jingzhou, which is standing and the prototype of the three worlds, Cao, Liu and Sun, three families each accounted for part of the Jingzhou, that is, in this year, the three families attacked each other, Lu Meng, who guarded the Jingzhou for Sun Quan, Guan Yu, who guarded the Jingzhou for Liu Bei and Cao Ren, who guarded the Jingzhou for Cao Cao, erupted into a scaled down version of the three killings.

Because of Cao Ren's harsh policies in Wancheng and Xiangfan, the people of Wancheng rebelled under the leadership of Hou Yin and others, and surrendered to Guan Yu, setting off a battle for Jingzhou between the three families. Cao Ren sent troops to pacify Wancheng, killed Hou Yin, and then massacred the city, and Guan Yu, who was in Jingzhou, had already risen up to respond to Hou Yin, and attacked northward to send out his Xiangfan campaign.

Because of Cao Ren's massacre, all the people around Xiangfan echoed Guan Yu, including Cao Cao's appointed assassin of Jingzhou, the governor of Nanxiang, the Luhun Rong Sun Wolf, and even some of those south of Xudu, who were all in communication with Guan Yu. That's why Cao Cao was so scared to move the capital after Guan Yu flooded the seven armies.

At that time, although Guan Yu was still laying siege to Xiangfan, he had already reached the outskirts of Xudu, and earlier, because of Cao Cao's accumulation of power over Emperor Xian of Han, he had caused an unprecedented crisis with those loyal to the Han Dynasty, while Cao Ren had nothing to do in Jingzhou, and Yu Ban and Pang De, who had been sent to the rescue, had been completely wiped out.

Further back, Liu Bei's seizure of Hanzhong and the beheading of general Xiahou Yuan in battle are all major setbacks Cao Cao has supposedly suffered since the Battle of Red Cliff, precisely because Guan Yu's military prowess, combined with the Han's centuries-old prestige, made Cao Cao feel terrorized for the first time.

These seemingly isolated, long timeline of things united, leading to the already crisis-ridden Cao Wei even worse, meet things can not be resolved, 36 plans to escape is the first reaction of all, Cao Cao is no exception, thinking of taking the Han Emperor to move the capital to Yecheng, to continue to grasp the emperor's ace card is the primary consideration.

But before he could even begin to move, Sima Yi and Jiang Ji persuaded Cao Cao to unite with Sun Quan to attack Guan Yu, and then mobilize his army to besiege him, which woke up the man in the dream. Cao Cao then sent a lobbyist to persuade Sun Quan, and on the one hand, he mobilized Xu Huang, and Zhang Liao, who was defending Hefei, to split up to rescue Cao Ren.

Sun Quan, who had long been coveting Jingzhou, made the most foolish decision of all: he immediately sent Lu Meng and Lu Xun to attack Jingzhou, while Xu Huang had already thwarted Guan Yu, and Zhang Liao had not yet arrived, so the news of Jingzhou's loss reached Guan Yu's army, resulting in the mighty Guan Yu's swift defeat and decapitation, and making the restoration of the Han Dynasty a pipe dream.

History can't be assumed, and many people feel sorry for Guan Yu, thinking that if Sun Quan hadn't reneged on his alliance, Guan Yu wouldn't have ended up in such a mess. If Sun Quan had not reneged on his alliance, what would have been Guan Yu's future?

First of all, if Sun Quan had not reneged on his alliance, but still attacked Hefei and then Xuzhou, then Zhang Liao would not have been able to drive to the front line in Jingzhou, but would have been exhausted from traveling back and forth, and Sun Quan would have been able to take Hefei with a high probability, and Xuzhou would not have been difficult because the local area was not well rooted for Cao Cao.

In Jingzhou without Zhang Liao's cooperation, there is no way for Xu Kuang to defeat Guan Yu's navy, and with an inside man for Guan Yu to use as reinforcements to harass Xu Kuang's rear, and with Cao Ren unlikely to be able to hold on for long, Crooked History believes that Guan Yu would have defeated Xu Kuang and taken Xiangfan. And continue to threaten Xudu, Cao Cao would have to implement a move of the capital.

Or, Sun Quan sat back and watched the tigers fight, and both Zhang Liao and Xu Huang supported Jingzhou, but the lack of naval vessels still didn't allow them to defeat Guan Yu, and Cao Wei's army was gathered in Jingzhou, and Guan Yu couldn't defeat the reinforcements, and fought in a legal manner, so what happened in the end was that it didn't work out, and Guan Yu retreated because of the winter season, when the water army didn't have an advantage, and he couldn't sustain his battle because of the rations problem.

Of course, if Guan Yu was able to hold out for a long time, Liu Bei in Yizhou sent troops from Shangyong and Hanzhong to attack Cao Cao, and that might have turned the tide of battle.