Cao Cao was a statesman, strategist and writer in the Three Kingdoms period, whose name was Meng De and alias Aman. He held the son of heaven and let the princes unify the north, serving the army all his life. He reclaimed land and built water conservancy projects in the north, which solved the problem of shortage of military grain and played a certain role in the recovery of farmers' production. Appoint talents, attract the middle and lower classes of the landlord class, respect the strongmen and strengthen centralization. The social economy of the ruling area has been restored and developed. The methods of selecting good soldier are: A Brief Explanation of Sun Tzu's Art of War and The Art of War. His poems, such as Walking in the Gully and Looking at the Sea, express his political ambitions and reflect the tragic life of the people at the end of the Han Dynasty, which are magnificent, generous and sad. "Cao Cao has been a tough guy all his life, and you actually like him." I think everyone will ask. In fact, Cao Cao has many advantages: he loves the people and doesn't let them live in dire straits. He is eager for talents and doesn't want to lose a general. Cao Cao was very clever since he was a child. When I was a child, I saved Yuan Shao with wisdom: Cao Cao and Yuan Shao were good friends when I was a child, and they often ran amok together. Once, the two brothers met someone else for a wedding and ambushed them. Sneak into the bridal chamber while people are unprepared, pick up the bride and run. But it was soon discovered and caught up, and the two left the bride and fled in a hurry. The two men were desperate and rushed into a thorn bush. Cao Cao was agile and jumped over. Yuan Shao is a chubby boy. He can't get through one jump, nor can he get through two jumps. The cry of catching a thief behind him is getting closer and closer. Yuan Shao panicked, lowered his head and got into the crack of thorns. As a result, his clothes were caught and Yuan Shao did not dare to move. Seeing that the pursuer was in sight, Cao Cao pointed to Yuan Shao and shouted, "Here comes the thief who stole the bride!" Yuan Shao panicked as soon as he heard it, and rushed forward desperately. Finally escaped. There is also a typical example of Cao Cao's cleverness: in the spring of Xingping two years (195), Cao Cao personally led an army to attack Lu Bu, forcing him to retreat one after another. In the summer, Lu Bu retaliated, and was ambushed by Cao Cao on the way, and fled in defeat. Cao Cao won his first major victory over Lu Bu. Lu Bu, who was retreating, joined the Chen Gong Department, assembled more than 10,000 troops and turned to fight Cao Cao again. Cao Cao boldly used the "false plan" to bluff, and Lu Bu did not dare to attack rashly. Cao Cao recalled a large number of troops overnight. Only Lu Bu knew that Cao Cao's action yesterday was just a bluff, and he took the initiative early the next morning. As a result, Cao Jun was ambushed and defeated Lu Bu. Lu Bu fled overnight, abandoned Yanzhou and went to Liu Bei. In this war, Cao Cao performed very well. He didn't lose heart in repeated failures, lost again and again, and fought again and again. He aroused the fighting spirit of the whole army with the crazy enthusiasm of starting a prairie fire. Although he was in adversity, he completely overwhelmed Lu Bu in momentum and finally won. After verification, this empty city plan was really used by Cao Cao. At that time, a man named Guo Chong worshipped Kongming very much, so he compiled Zhuge Liang's empty city plan. This is questionable, but it did happen to Cao Cao, and it did happen. Cao Cao also praised the emperor and ordered the princes. I think he is right. It is the best policy to welcome the son of heaven into his own hands, because in this way, he can make a good start. He wrote in the name of the son of heaven, not to mention holding the son of heaven as a vassal. Just seeing him get the son of heaven in this way, there will be many articles. At that time, there was a famine in Beijing, and Cao Cao allocated some grain and grass to Beijing to win the trust of his ministers. He wrote to Cao Cao to go to Beijing to receive the reward, and when he arrived in the capital, he coaxed the ministers to move the capital. A generation of adulterers, known as the minister of ruling the world, are adulterers in troubled times, and they have written poems all their lives. This is Cao Cao.