It is suggested that the review of advanced mathematics at this stage should focus on two modules: function, limit and continuity. The main body of advanced mathematics consists of five modules: function, limit and continuity, one-variable function calculus, multivariate function calculus, differential equation and series (the requirements of mathematics I, II and III are different in each module). Judging from the examination questions over the years, the emphases and difficulties of advanced mathematics are more concentrated in the first two modules, which is not only the focus of the examination, but also the basis for learning the latter modules well.
In addition, Mr. Liao suggested that textbooks should be the main part of the review at this stage, and the first and second candidates of mathematics suggested using the Tongji Edition (3rd Edition) of Zhao's Advanced Mathematics and Three Recommended Calculus of Mathematics published by Renmin University of China Press. When the textbook exercises are not too difficult for you, you can refer to a tutorial for the basic stage of postgraduate entrance examination. Recommended is the review book published by Li Yongle National School of Administration Press, or the guidance handout edited by Zhang Yu and Jolin Tsai published by beijing institute of technology press.