Confucius also said that disciple Yan Hui could develop his theory. But once he criticized Yan Hui, saying that Yan Hui, who listens to everything, really can't help himself. Because when a person thinks about a problem, he should listen to people's different opinions and consider them comprehensively. If what he said is what he said, he will never make progress if he can't even hear the opposite correct opinion. There is also a saying called "rhetoric, freshness and benevolence." The speaker is too good at pleasing others, and what he says must be biased and has no real opinion. This is why when everyone agrees with me, that is, when the words are the most colorful, people can't indulge in the realm of self-correctness, otherwise they will only think more and feel more correct and conceited.