Students, don't go to the book building. First of all, I belong to the book building. The book you want is in the exam bookstore on the fifth floor. Self-taught books are rarely available, and the price is very high. Even I went to Tianyi Bookstore on Changjiang Road to buy books. The price is 20% off, and there will be no self-study books in the library, because it is useless for you to revise them every few years. In addition, there is a Central Plains bookstore on Shizilin Street in Hebei District, which also sells self-study books. You can go there and have a look. Some textbooks that haven't changed much are still very cost-effective. I am qq786769 159, you can add me.