Confucius said: "When three people are walking together, there must be a teacher like me; choose the good ones and follow them, and change the bad ones.''

When three people are walking together, one of them must be a teacher. There is my teacher. I choose his good aspects to learn from him, and when I see his bad aspects, I correct my own shortcomings. This sentence contains two aspects: on the one hand, I choose the good ones and follow them. Studying when people are good is a spirit of being open-minded and eager to learn; on the other hand, correcting those who are not good, taking warnings when seeing others' bad behavior, and reflecting on oneself are the spirit of self-cultivation. In this way, no matter whether the people you work with are good or bad, , can all be teachers.