Recommend Li Yongle's book review. I took the 14 postgraduate entrance examination, and I have a good foundation in mathematics and plenty of time, so I also browsed the review guide of Teacher Chen Wendeng. Li Yongle's review encyclopedia attaches importance to basic methods, which is easy to think of, but it may be troublesome to solve some problems. Chen Wendeng's review guide attaches importance to skills, and some problems can be solved really easily, but it is hard to think of; In addition, Chen Wendeng's review guide has several sections devoted to proving questions, which must be read. It's a classic, much more than the classics in the review book.