Tongji University's two advanced mathematics books, a linear algebra book and Zhejiang University's probability and statistics book are all very good and classic textbooks. I'm sure I'll get something from it.
Supplement: Probability theory and mathematical statistics are also independent. I suggest you use Zhejiang University. Very good!
Also, the most important thing for the postgraduate entrance examination is to do more real questions, sum up the ideas for solving problems, and return to the teaching materials if you don't understand them. I suggest you go to the bookstore to buy a real title over the years!
PS: If you have any questions, please contact me directly!