Cao Cao is a man of great talent and tactics. He is jealous, insecure and impulsive, which makes him suspicious and cruel.
In the first time of Romance of the Three Kingdoms, it was written as follows: Xu Shao of Runan, who has the name of a knowledgeable person, went to see him and asked, "How do I behave?" Shao Yue said, "Zi can rule the world, and traitors in troubled times." Cao Cao was overjoyed, and Xu Shao summed up Cao Cao's greatest advantage, which was leadership. This also laid the groundwork for Cao Cao to become a real emperor in the future. It is also an affirmation of his personality.
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Looking at plum to quench thirst: once Cao Cao led his troops to fight, there was no water on the way, and the soldiers were very thirsty. So Cao Cao asked his men to send a message to the soldiers, saying, "There is a large piece of Meilin in front, bearing many plums, which are sweet and sour and can quench your thirst." Hearing this, the soldiers all drooled. With this, they can reach the place where there is water ahead.