Log in to the homepage of Zheng Da University, and there is "Teaching Material Supply Management" in the leftmost column. Click to enter, and there is "Student Entrance" in the lower right corner. Click and enter your student number and password (the initial password is 8888, and if it is changed, it will be your password). After entering, click "self-help book selection". Not every book should be selected. Some books are unnecessary. If you can find second-hand books, you don't have to choose.

Recently, many senior three students have started to sell books. See what book you want to choose, which publisher, who compiled it and which edition, and then you can look for books. When buying books, you can ask the senior students what their major is, and it will be easy to buy books if you find your own major.