romance of the three kingdoms: Cao Cao is suspicious, cruel and cunning. Famous saying: I'd rather lose the whole world than let one person lose my history: loving talents (the duke of Zhou vomited and fed, and the whole world returned to the heart), being tolerant (after defeating Yuan Shao, I burned it without reading the letter of collaboration from my men), and worrying about the country and the people. Of course, there are advantages and disadvantages of politicians.