It is difficult to teach now because children know a lot. If every teacher only knows the contents of the courses he teaches, but doesn't know humanistic knowledge, current affairs and politics, students' hobbies and characteristics, and can't treat students as friends, then the teacher is basically a failure.

I have been a teacher myself, probably because my age is not much different from that of my students. My class has always been full of laughter and has always been well received by students (by the way, I am not a normal major). Students have graduated for so many years, and they still call you teacher when they meet in the street. I think personal charm accounts for the vast majority, and students will admire you only if you have goods in your mind. Only knowledgeable and humorous words can impress students and stimulate their curiosity; Teaching with a straight face makes students feel uncomfortable and teachers feel pain, don't you think so?