According to the online inquiry of Beijing College Entrance Examination, Peking University Winter Vacation School is an academic activity open to outstanding middle school students, aiming at providing a platform for face-to-face communication with Peking University students. The passing rate of the initial test is an important index to measure the fierce competition in Peking University's winter vacation school. The passing rate of 10% in the preliminary examination means that only 100 applicants can pass the preliminary examination, which is enough to show that the competition in the winter vacation school of Peking University is very fierce.