Zhou Yu was able to successfully conquer Jiangling, in addition to the Jiangdong army itself, Liu Bei's support was also indispensable, at that time Liu Bei and others were mainly responsible for the interception of the north of Jiangling, it can be said that Liu Bei and Guan Yu's activities helped Zhou Yu delay a lot of time.

【Liu Beijun's actions】

In the Battle of Jiangling, Zhou Yu and others were mainly responsible for fighting against Cao Ren, while Liu Bei and others were mainly responsible for dealing with other Cao generals in order to cut off the connection between them and Cao Ren.

Although there is no clear and detailed record of this aspect, there is a lot of relevant information on the whole.

"Wu Lu" records that Yuyun said: "Ren guards Jiangling City, and there is a lot of food in the city, which is enough for disease." So that Zhang Yide will be thousands of people with Qing, Qing divided into 2,000 people to chase me, after intercepting Ren from the Xia Shui people, Ren Wen I must go. "Yu benefited with 2,000 people.

And there are many relevant records in the "Chronicles of the Three Kingdoms".

(Lejin) from Pingjingzhou, Liutun Xiangyang, Guan Yu, Sufi, etc., all left. The valleys of the southern counties are barbarian and descend. He also asked Liu Bei to frustrate Chang Du Pu and Jingyang Chang Liang Da, all of which were broken. ("Romance of the Three Kingdoms, Book of Wei, Zhang Leyu Zhang Xu Biography")

(Xu Huang) from the expedition to Jingzhou, don't Tunfan, ask for Zhonglu, Linfang, Yicheng thieves. He also fought with Man Favor Guan Yu in Hanjin, and Cao Ren attacked Zhou Yu in Jiangling. ("Romance of the Three Kingdoms, Book of Wei, Zhang Leyu Zhang Xu Biography")

In the thirteenth year of Jian'an, he conquered Jingzhou from Taizu. The army is also left, leaving (full) to pet the Fenwei general, Tundangyang. ("Romance of the Three Kingdoms, Book of Wei, Biography of Mantian and Guo")

Awarded (Wen) to hire soldiers, so that Cao Chun pursued Liu Bei in Changsaka. The ancestor set Jingzhou, Jiangxia and Wu connected, and the people were uneasy, so they were hired as Jiangxia Taishou, and the soldiers of the north were entrusted, and they were entrusted with side affairs and given the marquis of Guannei. Discuss Guan Yu with Le Jin in Xunkou, have merit, enter the Yanshou Pavilion Marquis, and join the rebel general. He also attacked Hanjin and burned his ship in Jingcheng. (Chronicles of the Three Kingdoms, Wei Shu, Er, Li Zangwen, Lu Xudian, Erpang Yan Biography)

Liu Bei and Zhou Yu surrounded Cao Ren in Jiangling, and sent Guan Yu to the north of the road. (Li) Tong led the crowd to attack it, dismounted and pulled out the antlers, and fought forward, to welcome the Ren army, bravely crowned the generals. He was forty-two years old. (Chronicles of the Three Kingdoms, Wei Shu, Er, Li Zangwen, Lu Xudian, Erpang Yan Biography)

It can be seen that after the combined forces of Sun and Liu moved up the river, they took different actions, with Zhou Yu's Jiangdong army taking charge of dealing with Cao Ren, while Liu Bei sent Guan Yu to intercept Cao Cao's possible reinforcements and cut off Cao Ren's connection with the north. Among them, Liu Bei also asked Zhang Fei to lead a thousand people to act with Zhou Yu, and Zhou Yu gave Liu Bei 2,000 people, among which the Sufi recorded in "The Biography of Le Jin" may be Su Fei, which should be an expression of the alliance.

In the records of the "Chronicles of the Three Kingdoms, Book of Wei", Guan Yu's actions mostly ended in failure, including the record of Le Jin repelling Guan Yu and Sufi and breaking Liu Bei, as well as the record of Xu Huang and Man Chong begging Guan Yu in Hanjin, as well as the record of Wen Ping and Le Jin begging Guan Yu Yu in Xunkou, on the surface, it seems that Cao Cao's army had the upper hand and Guan Yu ran around, but a careful analysis can find that Guan Yu's battle was actually successful, because Guan Yu basically completed the task of interception.

In the face of the strong Cao Cao army, Liu Bei and Guan Yu mainly adopted harassment and wandering tactics, when Cao Cao himself returned to the north to stabilize the overall situation, and then focused on the lower reaches of the Yangtze River where Sun Quan sent troops, and sent Le Jin, Xu Huang, Cao Ren and Wen Ping and many other cadres in Jingzhou, in order to allow Zhou Yu to concentrate on dealing with Cao Ren, Guan Yu and Liu Bei had to stop the support of Le Jin, Xu Huang and Wen Ping, in the face of many enemy generals, although Guan Yu paid a lot of losses, but in the end they basically stopped them, gave Zhou Yu time to succeed.

And in the end, when Cao Ren decided to withdraw from the army, Guan Yu really couldn't stop it, at that time, not only Xu Huang attacked, but also Li Tong from Yuzhou, Cao Ren finally escaped.

However, Guan Yujun should not have gained nothing at that time, although Li Tong recorded that he died of illness, he was very likely to have died in battle, or was fatally wounded. Before Li Tong's death, he was considered to be the "brave champion generals", and he was "dismounted and pulled out of the antlers, and fought and moved forward to welcome the Ren army", this kind of bravery felt that a patient, a person who was about to die of illness could not do it, Li Tong's death was very abrupt, and it may be a beautifying statement by historians at that time.

【Wonderful Battle】

Although the Battle of Chibi was more famous in later generations, it was actually not as exciting as the Battle of Gangneung. In the Battle of Chibi, because of Cao Cao's chaos, because it was the reason of the water war, the generals of Cao Wei failed to have an excellent performance, and the loss was very embarrassing, and by the time of the Battle of Jiangling, Cao Cao had withdrawn, and the war was basically carried out in the situation of land warfare north of the Yangtze River, so these generals had the opportunity to show their ability level.

Cao Ren and Zhou Yu undoubtedly fought the most exciting battle in the main battlefield of Gangneung. First of all, the two sides fought for Yiling, Zhou Yu followed Lü Meng's advice to confuse the enemy and take the opportunity to divide his troops and attack, and won a big victory in the opening game; Later, Cao Ren was not to be outdone, in the face of the strong vanguard of the Jiangdong army, he not only dared to send a small number of troops to challenge, but also dared to personally lead troops to rescue despite the threat after being surrounded, until he succeeded, two in and two out, fiercely deterring the enemy and improving the morale of his troops; In the final decisive battle with Zhou Yu, Cao Renjun also injured the enemy commander and almost turned the tables, and Cao Ren finally successfully retreated under the response of Xu Huang and others.

Liu Bei, Guan Yu and others assisted in blocking Cao Ren's reinforcements, although they were defeated in several battles, they undoubtedly helped Zhou Yu delay enough time, and indirectly posed a great threat to Cao Ren, forcing him to finally make the decision to abandon Jiangling. And Cao Cao's generals Le Jin, Wen Ping, Li Tong and Xu Huang also performed in their own ways.

The Battle of Jiangling ended with another defeat by Cao Cao's group and a victory by the Sun-Liu coalition. Of course, there are Zhou Yu, Liu Bei and others who have divided labor and cooperated and performed well, but at that time, Cao Cao's army was divided into four or five places in Jingzhou, and Cao Cao did not have a centralized command after he retreated, which led to Cao Ren being besieged, Le Jin, Wen Ping, and Xu Huang failed to provide effective support, otherwise it would be difficult for Guan Yu and others to stop Cao Cao's three generals at the same time, making the situation almost become Cao Ren's lonely battle, and finally lost to Zhou Yu.

The Battle of Jiangling is the second large-scale battle launched by the Sun-Liu coalition army after the Battle of Chibi, the purpose of which is to seize Jiangling, further expelled Cao Cao from the Yangtze River area, and consolidate the Yangtze River natural danger, after the success of this battle, Cao Cao went south to seize the territory of Jingzhou, of which eighty percent has been spit out, needless to say in the south of Jingzhou, most of the southern county was also captured by the Sun-Liu coalition army, leaving only the Xiangyang and Fancheng areas in the north of Jingzhou South County and part of Jiangxia County, Cao Cao's southern expedition launched in the thirteenth year of Jian'an (208) has been completely declared a failure.