I can't. A perfect score of 150 in mathematics in the college entrance examination does not guarantee that you will walk Tsinghua. Although math scores account for a large proportion in the college entrance examination, the scores of single subjects do not determine whether you can walk to Tsinghua, and you need to consider the scores of other subjects. In Tsinghua, the selection criteria for students who walk are mainly comprehensive grades, including grades in Chinese, mathematics, foreign languages, physics, chemistry, biology and other subjects. If you want to walk Tsinghua, you need to meet the selection criteria of students walking in Tsinghua University, not just full marks in mathematics.