The legend that Cao Cao, an alcoholic, conquered Guanzhong, stayed in Guoyuan as a logistics, and promoted Guoyuan as the satrap of Wei County.

When Cao Cao returned from Liucheng North, Guo Jia was seriously ill. Cao Cao was worried and kept visiting. Unfortunately, I got lost and died at the age of 38. When Cao Cao arrived at his funeral, he was very sad and said to Xun You and others, "You are all my generation, but filial piety is the smallest. After making up my mind that day, I wanted to entrust him with the funeral, but he died in middle age. This is God's will! " Guo Jia was named Hou Zhen, and his son Guo Yi was the heir. Later, Cao Cao was defeated in Battle of Red Cliffs and sighed: "Guo Fengxiao is here, and I will not fight alone."

Guo Jia was sickly and behaved badly. Even if he was reported by Chen Qun, he was still the same. Cao Cao cherished Guo Jia's talent without criticism. Guo Jia is far-sighted and good at speculating other people's psychology and character. What Liu Biao, Liu Bei, Sun Ce, Yuan Shao, Yuan Tan, Yuan Shang and others did was accurately inferred by him. Cao Cao once lamented: "Only Guo Fengxiao can understand my mind."

Cao Cao conquered Guanzhong, stayed in Guoyuan logistics, served as the long history of the government, and was in charge of everything in the government. Soon, Yin Tian and Su Bo rebelled in the river, and General Jia Xin broke it. Yin Tian's men have more than 1000 people demanding surrender. Cheng Yu advised Cao Cao not to punish them, and Guoyuan begged for mercy for them. As a result, more than 1000 people were able to save their lives. Traditionally, in the documents recording the war, the meritorious military service is often exaggerated ten times, that is, "killing one person" will be written as "killing ten people", but Guoyuan truthfully reported the number of heads captured in the counter-insurgency. Guo Yuan said: "When the country conquers foreign invaders, boasting about the number of the first thieves can increase military strength and inspire people. But the rebellion of Yin Tian and others is civil strife, which is not a glorious thing. I am deeply ashamed of the civil strife in the state. " Cao Cao appreciated his words very much, so he was promoted to be the magistrate of Wei County.

When Lu Bu took Cao Cao on an expedition to Xuzhou, he attacked Yanzhou and Cao Cao immediately fought back. The Lyu3 bu4 army was stationed four or five miles west of Puyang, and Cao Cao carried out a night attack until the next morning. Lyu3 bu4 led the troops to rescue and besieged Cao Cao on three sides. Lu Bu led the army to fight dozens of battles from morning till night, and the situation was fierce. Cao Cao recruited strong men to fight, and Dian Wei was the first to respond, recruiting dozens of people. They put on double armour, gave up the big rafters and went into battle with spears and halberds. Just as the war on the western front was urgent, Dian Wei rushed forward to stop the enemy soldiers, and the enemy's crossbows shot wildly, and the arrows rained down. Dian Wei closed his eyes and stopped the foot soldiers: "Call me if the enemy takes ten steps to me again." The foot soldiers shouted, "Ten steps." Then Dian Wei shouted, "Call me five steps away!" Everyone was scared and shouted: "The enemy is coming!" Armed with a dozen halberds, Dian Wei let out a cry and all the enemies who attacked Dian Wei fell to the ground. Finally, at dawn, Lu Bu retreated. Dian Wei was worshipped as a captain for his work, and became a guard around Cao Cao, leading hundreds of Chi soldiers to patrol around the tent.