Tell me about the life of Guo Jia, a drinker of Wei in the Three Kingdoms.

Guo Jia (170—207), a native of Yangzhai, Yingchuan (now Yuzhou, Henan), was a famous strategic genius under Cao Cao in the late Eastern Han Dynasty. The world calls him a "genius". Guo Jiachu voted for Yuan Shao, who respected him very much. After living in the Guo family for dozens of days, I commented on Yuan Shao's advisers Xin and Guo Tu, saying, "A wise man can judge the Lord, so he can make a name for himself. Yuan Gong wanted to be the corporal of the Duke of Zhou, but he didn't know the opportunity to choose someone. It's hard to have too many goals and too few wants, but it's hard to make up your mind. It's hard to help the world with * *, but it's hard to decide about the overlord ("The Reflection of the Three Kingdoms, Shu Wei and Guo Family Biography")! He also said: "I will do my best for the Lord, and my son will die!" " "However, the two said," The Yuan family is kind to the world, and many people return it. Now it is the most powerful. What shall we do? "(Zi Tong Zhi Jian, Volume 62)! Guo Jiazhi and his wife left Shao without finding Yuan Shao's shortcomings. At first, the famous playwright of Yingchuan was Cao Cao's counselor, and Cao Cao attached great importance to him. However, his ambition died, so Cao Cao wrote a letter to his counselor Yu Xun. The book says, "When ambition dies, you can't talk to the planner. Your aunt, who can take his place? " (reflection of Shu Wei Guo Jiachuan) Yu Xun recommended Guo Jia to Cao Cao after reading the letter. Cao Cao summoned Guo Jia to discuss world affairs with him, and said happily, "This man is the only one who can turn an orphan into a big entrepreneur" (Biography of the Three Kingdoms, Shu Wei and Guo Jia). After meeting, Guo Jia was also very happy to say, "It's really my master" (Biography of the Three Kingdoms, Shu Wei and Guo Family). Cao Cao appointed Guo Jia as the air force's drink offering, which was the first year of Jian 'an (196). From then on, Guo Jia won the support of Cao Cao with his resourcefulness and decisiveness. In the same year, Lu Bu shot a halberd at Yuanmen to save Liu Bei, and Liu Bei soon got more than 10,000 soldiers, which caused Lu Bu's jealousy and led his troops to attack Liu Bei. Liu Bei fled and surrendered to Cao Cao, who treated him well and let Liu Bei graze in Yuzhou. Someone said to Cao Cao, "Be prepared to be a hero. If you don't make plans early today, you will be in trouble later. " Cao Cao asked him what to do, and he said, "Yes, yes. However, in order to eliminate violence for the people, the soldiers of the popular uprising pushed the honest staff letter to recruit Jie Jun, but they were still afraid. Today, there are heroes, and they also harm poverty in the name of harming morality. In this way, the wise will doubt themselves, change their minds, choose their own masters, and who will decide the world! In addition to the suffering of one person, I hope to be at home all over the world, and safe opportunities are also indispensable. " Cao Cao smiled and said, "You guessed it" (Capital and Construction, Volume 62)! So he sent more troops and food to Liu Bei and sent him to Pei County (now Pei County, Jiangsu Province) to collect skirmishers against Lu Bu.

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