Of course it's useful, because it's easy to be unsystematic when studying. Most of the teachers in the postgraduate counseling classes are teachers with rich experience in postgraduate counseling. They know all about the postgraduate entrance examination subjects, and they can point out the key and difficult points for everyone. Some experience, methods and skills of postgraduate entrance examination are also very useful to students. The review of postgraduate mathematics is often brain-burning, and I hate complicated mathematical formulas. Postgraduate entrance examination, in the final analysis, is that personal efforts are greater than everything else. Without this internal cause, all external causes will not work. So I warn my classmates not to take remedial classes as a sufficient condition for your postgraduate entrance examination. It may be necessary, but it is definitely not enough. Only if we work hard can the proposition of postgraduate entrance examination be established. I have always invested in the postgraduate entrance examination. In addition to buying the necessary information, I spent hundreds of dollars to sign up for the Tiandao online class. Other materials were found on the forum, and then I persisted in my struggle for 8 months. This year's 985 college exam passed the re-examination. So I still rely on my own efforts.