The 100 schools of assistance plan take advantage of the chaos to take advantage of the opportunity to reap benefits, which is a significant feature of "fishing in troubled waters". Liu Bei used this strategy and successfully captured Nanjun.
In the Battle of Chibi, Cao's army was defeated, and Cao Cao had to lead the remnants of the defeated army to retreat to Xuchang. Before leaving, Cao Cao sent his general Cao Ren to garrison Nanjun (present-day Hubei Gong'an) to prevent Sun Quan from advancing north.
In fact, both Sun Quan and Liu Bei were fighting the idea of Nanjun. The victory in the Battle of Chibi greatly increased Sun Quan's confidence, so he sent Zhou Yu, Cheng Pu and others to pursue the victory, preparing to capture Nanjun. At the same time, Liu Bei also moved to the mouth of the Youjiang River, intending to capture Nanjun.
Before attacking Nanjun, Zhou Yu first sent troops to capture Yiling (present-day Yichang, Hubei), and then took advantage of the victory to attack Nanjun. Cao Ren pretended to be invincible, led the army to abandon the city, but secretly planted an ambush in the city, Zhou Yu was tricked to lure the enemy, just led the army to the city, and saw the chaotic arrows flying from all around, and Zhou Yu was also hit by an arrow.
The generals protected Zhou Yu to fight a bloody way, and after returning to the camp to heal, they found that the arrows were poisonous. The doctor told Zhou Yu that he must recuperate and never get angry, otherwise the poison will enter his heart and he will not be able to return to heaven.
Cao Ren was very happy to see that Zhou Yu had been hit by a poisoned arrow, and knew that it was not appropriate to be angry with this injury, so he deliberately sent people to Zhou Yu's camp every day to scold. Zhou Yu's generals were afraid that he would be angry when he found out, so they stuck to the camp gate and refused to fight. But Cao Jun's scolding was too loud, and it was still heard by Zhou Yu, who was so angry that he was about to fight on the spot, and was persuaded by the generals.
One day, Cao Ren personally led the army to challenge in front of the Dongwu camp, Zhou Yu was furious, and led the men and horses to rush out, and the Dongwu generals could not stop it. Not long after the battle began, Zhou Yu suddenly screamed, vomited blood, and fell under his horse, and the generals were shocked and hurriedly rescued him back to the camp. After returning to the camp, everyone learned that Zhou Yu had already made up his mind to make up his mind and use this to coax the enemy.
It didn't take long for the news of Zhou Yu's arrow sore attack and death to spread quickly. At the same time, mourning music was played in the Dongwu military camp, white flags were hung, and the soldiers were wearing white filial piety, and the cry shook the sky.
When Cao Ren heard the news, he was overjoyed, thinking that Zhou Yu had just died, the Eastern Wu group of dragons had no leader, and the army was disheartened, so he just took the opportunity to rob the camp, not only to defeat the Wu army, but also to cut off Zhou Yu's head and send it to Xu Capital for reward.
Taking advantage of the night, Cao Ren personally led a large army to rob the camp, leaving only Chen Jiao to lead a few soldiers to defend the city. Cao Jun rushed into Zhou Yu's camp, but saw that the camp was empty, and there was no one to be seen, and there was silence in all directions. Cao Ren knew the plan and hurriedly ordered the troops to retreat, but it was too late, only to hear a cannon sound, and the Wu army killed from all directions, and the general led by Zhou Yu who had "returned to heaven".
Cao Jun was flustered and unable to resist, and Cao Ren finally broke out of the siege and wanted to retreat to Nanjun. But Zhou Yu had already expected this, and planted an ambush on the road to Nanjun in advance, and Cao Ren was intercepted and had to flee north.
After Zhou Yu defeated Cao Ren, he immediately waved his army and went straight to Nanjun. However, when Zhou Yu led his troops to the city of Nanjun, he saw that the head of Nanjun was covered with flags, and there was a general standing on the head of the city - Zhao Yun.
It turned out that Zhao Yun was ordered by Zhuge Liang to take advantage of the fierce battle between Zhou Yu and Cao Ren to easily take Nanjun, where only the old and weak soldiers remained. Zhuge Liang used the captured talisman to send people to pretend to be Cao Ren and go to various places overnight to ask for help, and it was easy to capture Jingzhou and Xiangyang.
In this battle, Liu Bei took advantage of the battle between Zhou Yu and Cao Ren to use the strategy of "fishing in troubled waters" and easily took Nanjun.
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