The Chinese college application works way differently from American ones. The admission rate is meaningless. Zhejinag University is state assigned 985 university (there are in total 9 of them). Believe me any students in elite high schools in China will be very happy if they can be accepted into Zhejiang University. Most of them unforunately don't have the score to even think of applying. It technically is not applying. Students take the once a year exam, if they don't score higher than top 500 in their province, don't even think about trying to apply Zhejing Univ.