I have met teachers who give lectures in simple terms, teachers who are very serious in class, teachers who have strict homework requirements, and teachers who patiently and meticulously answer doubts. I am grateful to these teachers for adhering to the quality of teachers in such an environment, and I am also grateful to meet such teachers in the university. I think that everyone who wants to be a teacher at first will have a reverence for the word "teacher" in his heart. However, for some university teachers, these two words are very light, just a springboard and can be discarded at any time. I was really angry when I met such a "teacher", but there was nothing I could do. I can only tell myself secretly, don't waste time because of them, and always keep the word "teacher" in awe. The initial heart is not negative.