If you simply look at the entrance examination of Hongyu class, it should be a morning of military training in Grade One of Senior High School. Take the math test first, and then take the physical chemistry test, with math as the main point and physical chemistry as the reference.
I am a graduate of 2009, and the situation should not change now. If you are an international student in Lanzhou, I suggest that you prepare for the May Day exam in advance from the winter vacation. Being admitted to the top ten in the province is not as terrible as you think. At that time, there were 4,000 students who took 19, and their previous scores were very close. If you were born in Lanzhou, look at the simple math contest and the knowledge of Grade One while making sure that the senior high school entrance examination is correct. Just do physical chemistry well. Scores don't play much role in the actual exam unless you really answer well.
Senior (not cute ~) wishes you success.