I suggest you find out the designated books of these two schools first, and then compare them yourself. As far as I know, Beijing Normal University has high requirements for English. Relatively speaking, South Normal University is easier to test.
If you are a junior, then I suggest you look at the history of literature quickly and see through it. There are two versions of Yuan Xingpei and You Guoen. Then take your own notes and organize your own knowledge points. Also look at important works, and make some notes on the selection of works appropriately. The main thing is to insist!
Hope useful to you