In short, the institutions that apply for the exam are not obliged to provide you with review materials.
His duty is only to explain to you the relevant issues of the entrance examination, such as the subject bibliography of the fractional test.
As for the specific review materials, you have to prepare your own review materials, if it is a note courseware or something.
Then forget it. These are all for selling money, hehe.
Search online. There are usually some.
If you can, find a graduate student from that school and give you some money at most to help you get the whole information.
Since you want to take the postgraduate entrance examination, don't care about money.
The key is to be admitted.
good luck