This code comes from the eleventh chapter of the Romance of the Three Kingdoms, "Liu Huangshu Beihai saves Kong Rong, and Lu defeats Puyang Cao Cao": "Guo Jia admonishes:' Liu Beiyuan should answer with courtesy in case his heart is slow; Then send troops to attack the city and the city will be broken. " "
At the end of the Eastern Han Dynasty, Kong Rong in Beihai was besieged by the Yellow Scarf Army Guan Hai Army, and the situation was critical. He sent someone out of the tight encirclement and asked Liu Bei for help. Just after the battle, Tao Qian, the satrap of Xuzhou, sent someone to be in an emergency, saying that Xuzhou was surrounded by Cao Cao's military forces and asked Liu Bei to solve his urgent need.
Liu Bei led Guan Yu, Zhang Fei and Zhao Yun to fight their way out and go straight to Xuzhou. Tao Qian invited Liu Bei into the palace, took out the Xuzhou brand seal and gave it to Liu Bei, saying, "At present, the state affairs are chaotic and the dynasty is weak. You are a relative of the Han family, so you should help the country. I am old and fatuous, and I am willing to give up Xuzhou ... "
Liu Bei refused, saying, "I have no merit or virtue. I'm here to save you from a just cause. How dare I have the heart to annex you? " ! "
The two refused to each other, and there was no result. The officials advised each other: "Today, Enemy at the Gates, discuss the plan of withdrawing troops first, so that the matter of Tao can be discussed later." Liu Bei agreed: "I'll write a letter to Cao Cao first to persuade him to withdraw. If he doesn't agree, it's not too late to hit him again. "
Liu Bei wrote: "At present, there are endless worries at home, Dong Zhuo's remaining party has not been removed, and rebellious farmers abound. You should put the imperial court first and don't avenge yourself. If we withdraw our troops from Xuzhou to save the country, the world will be blessed! "
After reading the letter, Cao Cao flew into a rage and scolded, "Who is Liu Bei? How dare you lecture me! Give me the messenger's head, and the whole army will attack the city at once. What can he do, Liu Bei? ! "
Cao Cao had a counselor named Guo Jia. He is a visionary. Seeing Cao Cao's anger, he coaxed and said, "No, it's very kind of Liu Beiyuan to come to the rescue. We must not be reckless, but also use good words to appease him, relax their fighting spirit, and then attack the city, which will be a piece of cake. " Cao Cao listened to Guo Jia's suggestion, entertained the emissary and wrote back to Liu Bei. While Cao Cao was chatting with the emissary, suddenly a meteor came to report that Lu Bu's army had breached Yanzhou and was attacking Puyang. Cao Cao was terrified and shouted, "Yanzhou is in danger, we are homeless, so evacuate Xuzhou immediately!" "
Guo Jia ordered the withdrawal, and then said to Cao Cao, "You can sell a personal favor to Liu Bei, saying that you withdrew for him!"
Cao Cao nodded knowingly and wrote a new letter to Liu Bei.