At that time, Cao Cao failed to assassinate Dong Zhuo, and Dong noticed that he wanted Cao Cao. Later, Cao Cao met Chen Gong, and they met Lv Boshe on the road. Lv Boshe is a close friend of Cao Cao's father Cao Song, so Lv Boshe invited Cao Chen to his home. After arriving in Lv Boshe, Lv Boshe went out to buy wine to entertain them. At this time, Cao Cao became suspicious. Later, he heard someone sharpening a knife in the kitchen and someone talking about "tying and killing". So Cao makes it easier to kill his family. When they found a pig tied in the kitchen, they killed the good man by mistake, and then they left. On the way to leave, they met Lv Boshe and Lv Boshe who came back from buying wine. His family killed a pig to entertain them, so why did they leave? Cao Cao said it was urgent, and then Cao Cao shouted, "Who's coming?" When Lv Boshe turned around, Cao Cao cut it with his sword. Chen Gong asked Cao Cao, since Lv Boshe killed his family by mistake, why should he be spared? Cao Cao said that if Lv Boshe found out that his family had been killed, he would definitely sue the officials. He threw out the sentence: "I would rather teach me to be negative to the world than ask the world to be negative to me." .