I have been reviewing fire protection since the end of the new year and working at the same time. In the second fire review in mid-April, besides reviewing the curriculum system, I did a lot of basic exercises, but when I opened each chapter of the book, I was still at a loss, which was a great blow to myself. The fire test made me feel like an examinee. I'm so tired, I overestimate myself. I'm afraid it will be planted on fire control this time. So I signed up for a class, and it was really too much to review myself. Of course, I enrolled in the three-person teaching, but I also went to the rough and refined. Compared with the results, I need their pre-test counseling and review courses. Because of the foundation of self-study and review before, what is most needed is the focus of the teacher's outline. I don't need to go into details, but it varies from person to person. I have a certain foundation, so I chose the punching class. If my partners have no foundation, I suggest. I followed the teacher in class, prepared three basic textbooks, and then directed a lot of questions, feeling a lot clearer and more confident. I think self-study and teacher's guidance really get twice the result with half the effort for me.