In the autumn of the twenty-fourth year of Jian'an (219), Guan Yu led an army in the Northern Expedition, attacked Fancheng, and launched the "Battle of Xiangfan", and then Cao Ren was defeated by Guan Yu and was almost eaten by Guan Yu.
Later, Cao Cao sent Yu Ban and Pound to rescue him, but he was also defeated by Guan Yu, and Yu Ban's Seventh Army was more than 30,000 people, and the entire army was destroyed.
Guan Yu's troops were strong, and Cao Cao was afraid and wanted to move the capital, in this case, Cao Cao's advisers Sima Yi and Jiang Ji gave Cao Cao a plan, let Cao Cao unite with Sun Quan, and sneak into Guan Yu's rear, making Guan Yu difficult to care about.
Sun Quan listened to Cao Cao's advice, and immediately sent the general Lü Meng to lead an army across the river in white clothes and sneaked into Jingzhou, and Guan Yu was lost in the rear, and the army's morale was quickly scattered, the soldiers had no fighting spirit, and fled a lot.
At this time, Cao Cao also sent Xu Huang to lead an army to support Fancheng Cao Ren, Xu Huang's army, consisting of several men and horses, and soon, defeated Guan Yu, and Guan Yu was forced to withdraw.
Guan Yu withdrew his troops and could not withdraw back to Jingzhou, because the rear area was lost and could only go to Xichuan.
At this time, Cao Ren saw Guan Yu withdrawing his army and wanted to lead his army in pursuit. The soldiers under them all believed that the pursuit at this time was the best fighter, and guan Yu would be captured in a battle.
Because, at this time, Guan Yu's army was defeated like a mountain, he was not a flooded Seventh Army, Wei Zhen Huaxia time Guan Yu, now, is the weakest time, chasing Guan Yu, you can destroy Guan Yu.
However, there was a person who stood up and stopped Cao Ren, and this person was named Zhao Yu.
Zhao Yu said to Cao Ren, at this time, if we pursue Guan Yu with all our might, even if we destroy Guan Yu, Sun Quan will definitely be suspicious, thinking that if we destroy Guan Yu, the next target will be aimed at him and eat him, and he will definitely be defensive, and even deal with us, and create trouble for us.
The Chronicle of the Three Kingdoms and the Biography of Zhao Yu records that the generals of the Renhui Society discussed, Xian Yue: "Now because of the danger of the feathers, they will be able to chase the birds." "Quan invited Yu to join the army in the difficulty, wanted to cover up the aftermath, Gu Yu also saved, afraid that I would accept his two fatigues, so I resigned to seek results, took advantage of the change, in order to see the blunt ears." Now that Imaha is alone, it is more appropriate to think that it is a danger to power. If you go deep into the north, quan will change his mind to the other, and he will suffer from me. The king will take this as a deep concern. "Ren is the untying of the strict.
Cao Ren felt that what Zhao Yu said was reasonable, so he obeyed and did not pursue Guan Yu.
At this moment, Cao Cao heard that Guan Yu had been defeated and retreated, and was worried that the crowd would pursue him, so he quickly sent someone to send a six-hundred-mile urgent letter, ordering Cao Ren not to pursue Guan Yu, and when the letter arrived, Cao Ren looked at it, and Zhao Yu said the same as Cao Cao's.
The "Romance of the Three Kingdoms" records that Taizu WenYu went away, fearing that the people would chase after him, and the fruit was sick and benevolent, as yu planned.
In this way, Cao Ren gave up pursuing Guan Yu and let Sun Quan do this tricky thing.
In the end, Sun Quan captured and killed Guan Yu, angering Liu Bei, who led an army of 50,000 to march on Sun Quan, and the "Battle of Yiling" broke out.
If Lu Xun hadn't burned Liu Bei's seven-hundred-mile joint venture, Sun Quan would definitely be in danger.