This sentence comes from the Romance of the Three Kingdoms, which was written by Luo Guanzhong to support Zhuge Liang. Romance of the Three Kingdoms is a famous literary work that promotes Shu and suppresses Cao and Wu. Historically, Zhou Yu and Zhuge Liang are two figures who have no intersection at all. When Zhuge Liang came out of the mountain, Zhou Yu was already the founding hero of Soochow, and his reputation spread far and wide, while Zhuge Liang was just an unknown person at that time. Battle of Red Cliffs was also commanded by Zhou Yu, and had nothing to do with Zhuge Liang. In order to beautify Zhuge Liang, Romance even invented a story of "borrowing from the east wind" to make Zhuge Liang look like a fairy. According to Lu Xun, romance is "like Zhuge Liang's wisdom, close to the demon." Zhou Yu in history was open-minded. Veteran Cheng Pu refused to accept Zhou Yu because he was young and insulted him many times in person. Zhou Yu didn't care about him. Cheng Pu was finally impressed by Zhou Yu's talent and morality, and moved to say, "Make friends with Zhou Gongjin, and you won't get drunk when you drink." He became friends with him. Zhou Yu, who is narrow-minded and described in The Romance of the Three Kingdoms, is a supporting role image deliberately created by Luo Guanzhong to set off Zhuge Liang. It's an artistic treatment, so you can't take it seriously. Of course, there is no historical basis for "Three Yu", and Zhou Yu finally died of illness on the way out. Zhou Yu is proficient in temperament and elegant in manners. Even if he is drunk, he can hear fallacies in music. Therefore, the history books record the folk songs: "The song is wrong, Zhou Lang cares" and "In order to attract the attention of the enemy, she touches the wrong note from time to time".