Senior student Zheng Hanzhou is a student in Diao Haibao's class in Senior One. If Diao Haibao has any questions after class, he will give a detailed lecture and answer them very seriously. Personally, I think Diao Haibao is better than Zheng Hanzhou as a math teacher. Diao Haibao will sort out many useful conclusions. The topics in the class are classic, but the topic analysis is in place, but the requirements for students are higher. If what he said is wrong, he should make up five similar questions and correct them himself. In addition, there will always be one more difficult test paper on weekends, so basically it will not exceed half on Saturday. But from the perspective of being a class teacher, it is another matter, and it has nothing to do with the problem, so I won't talk about it.