In 219, Guan Yu, who had been given the title of former general, had Nan commandery Taishou Mi Fang sit in Jiangling and the general Fu Shiren sit in Jiangxia, after which he led most of his generals in Jingzhou to besiege the two cities of Xiangfan. Since Guan Yu was the main attacker of Fancheng, the Fancheng defender Cao Ren could not resist Guan Yu's attack, so he held the city while asking Cao Cao for help. When Cao Cao learned the news, he immediately sent the Seven Roads Army of yu to support Cao Ren to prevent Fancheng from being breached. However, Yu Ban mistakenly stationed the army in a low-lying place. After Guan Yu learned the news, he immediately asked the army to build warships and sent sailors to stand by. In August, the autumn rains continued and the Han River soared, thus drowning Yu Ban's army. At this time, Guan Yu took the opportunity to attack, thus defeating the 30,000 troops led by Yu Ban, and killing Pound in front of the battle, Yu Ban saw that the general trend was gone, and could only choose to surrender.
Because Guan Yu defeated the elite army sent by Cao Cao to reinforce, in order to prevent Fancheng from being destroyed, Cao Cao took the division of Jiangnan as a condition, hoping that Sun Quan could attack Guan Yu's rear and thus reduce the pressure on Fancheng's front. However, Sun Quan had already had the idea of attacking Guan Yu, and he immediately turned his back on his alliance with Liu Bei and instead allied with Cao Cao and sent Lü Meng to attack Jingzhou. At that time, Lü Meng came to Xunyang, ambushed the elite soldiers in the cabin, and let some soldiers act all the way as shipwrights who rocked and sailed on the deck, wearing ordinary clothes without armor, and the other half of the soldiers acted as merchants, letting the ship go down the Yangtze River to Jiangling, and Guan Yu's patrol posts along the way did not arouse alarm, resulting in all the guards in Jiangling, including the soldiers standing guard, being captured alive by Lü Meng, at this time Mi Fang and Fu Shiren who were sitting in the rear fell without a fight, and the rear of Jingzhou fell, resulting in the final defeat of Guan Yu. It's just that although Lü Meng crossed the river in white clothes to capture Jingzhou, he also led to the collapse of Sun Liu's alliance, so if this is the case, is it a wise choice for him to occupy Jingzhou?
In fact, the capture of Jingzhou was indeed a good surprise attack, and the key problem was that even if Eastern Wu captured Jingzhou, Eastern Wu could not rely on Jingzhou to dominate the world. It should be known that when Jingzhou was in the hands of Shu Han, Eastern Wu and Shu Han were good friends, and the two countries could jointly resist Cao Wei, if so, the pattern of the world was no longer good, and if it was lucky, the two countries might be able to defeat Cao Cao in a state of joint effort. After all, Cao Cao's power was too great, and it was impossible to compete with sun quan and Liu Bei alone. This was also the reason why Zhou Yu and Lu Su had always stood on the front of the Sun Liu Alliance at that time.
Unfortunately, the results of Zhou Yu and Lu Su's efforts for so long were destroyed by Lü Meng, and after the Battle of Jingzhou, although Eastern Wu gained part of Jingzhou, it also lost the opportunity to dominate the world.
The author believes that Lü Meng is short-sighted and has no desire to dominate the world, which will sneak into Jingzhou and kill Guan Yu.