I took the postgraduate entrance examination this year and got number two. Although it's not the same as the number one, I also bought the math from Tongji University to review, but I think the number one is not detailed, the content is simple and the book is relatively thin. Although many people recommend reading Tongji's, I don't think it is necessarily better than my own textbook. I think it's best to have detailed answers to exercises at the back of the book. It's better this way. For reviewing mathematics, you must read the textbook first and do the corresponding questions at the back of the textbook (not necessarily all of them, mainly to master the methods). As for reviewing the whole book, I think it is necessary to buy it, because there are some very good methods to learn, but the most important thing is to find a method that suits you, not necessarily many, as long as you have one who is very skilled. These are my personal suggestions. If you have any questions, ask me. I hope I can help you.