What was the reason for the disintegration of the Wu-Shu Alliance after the end of Battle of Red Cliffs?

After pacifying the north, Cao Cao went south in July 2008, and Liu Biao, the secretariat of Jingzhou, died of illness. Liu Cong, the second son, was persuaded by Kuai Yue, secretary of the county, and Fu Xun, secretary of the Dongcao family, to cede Jingzhou to Cao Cao. After losing Jingzhou, Liu Bei was the first to bear the brunt. He is a guest of Fancheng. Liu Cong surrendered, but he was afraid to tell Cao Cao. Seeing that it was getting late, Liu Bei led his troops south and cried, "Liu Jingzhou is in danger. He wants me to give him a present. Jingzhou has always been the heart of Wu, and the danger of Wu is on the Yangtze River. Jingzhou lies in the upper reaches of the Yangtze River. Without Jingzhou, there would be no country. " The enemy is in Huainan, but the danger of the Yangtze River will unite us. The enemy is upstream, and the Yangtze River is very dangerous to him. Therefore, Sun Quan had to make a choice between surrendering and joining forces with Liu Bei against Cao Cao. Finally, Sun Quan agreed to form an alliance with Lu Su and Zhou Yu, and defeated the powerful Cao Wei in Chibi to catch his breath.

After Battle of Red Cliffs, as an ally of Jiangdong, Liu Bei not only captured Wuling, Changsha, Lingling, Guiyang and other places like lightning, but also occupied the south of Jingzhou. He also rejected Sun Quan's proposal to jointly attack Yizhou and attack Liu Zhang territory alone. The expanding business has made Sun Quan's Shuhan family nervous, because after Battle of Red Cliffs, Liu Bei took part in the battle for Jingzhou, and he also wanted to lend Jingzhou to Liu Bei, a southern county. At the same time, Liu Bei's strength is increasing, and Sun Quan is very difficult. Hundreds of elite troops besieged Hefei for hundreds of days, which means that Zhang Zhao led the army to attack, and it also means that only Zhou Yu who attacked Jiangling successfully defeated Cao. At first, Wu Dong intended to borrow Cao Cao's hand, and both sides were good, but Sun Quan and Jiangdong people didn't expect that their parents were driven to extinction, making themselves the weakest party. On the contrary, Wu Dong has to pay attention to the competitive needs of Jingzhou because he has been entrenched in Hefei for a long time.

The root cause of "Jingzhou's carelessness" is not that Master Guan despised Lu Xun because of arrogance, but that Guan Yu went north, which was the right time for Lu Bobo to cross the river in white. In the battle of Xiangfan, Guan Yu drowned the Seventh Army, beheaded Pound and captured him. A group of robbers, such as Liang, Lan and Lu, got Yu's seal from a distance and threw it in. "。 I shocked China with great strength. "Shu Han and Wu certainly don't want to continue to be bigger and stronger. The face that Liu Bei had nothing to do with Sun Quan was not swallowed by Cao Wei. In the future, Liu Bei swallowed it, only weak alliance, so he chose to weaken Liu Bei. Sun Quan and Lv Meng discussed how to attack Jingzhou together. Finally, he succeeded in ambush and beheaded Guan Yu and his son. ?

But obviously, Sun Quan thought that Liu Bei's "internal heat" would be so great. He despises Liu Bei's loyalty and Jingzhou and underestimates Liu Bei's "occupation of orthodoxy and destruction of monopoly by Cao Wei and Wu". When Liu Bei sent troops to fight, Sun Quan might, on the one hand, be Cao Wei. Finally, Lu Xun, the general of the State of Wu, fought back, and Liu Bei was seriously injured by fire. However, Liu Bei, who was stationed in Dongyong 'an, Yizhou, still made Sun Quan feel afraid. He is worried that Liu Beihui will really oppose it regardless of the situation. Sun Quan sent envoys to make peace.