The students of all the science schools in Zhejiang University are in the science experimental class in the first year, and their majors are determined from the second year. There are mathematics department, chemistry department, physics department, psychology department, biology department and so on. The major direction is basically up to you, so it won't be difficult to get into the math department.

After graduating from the department of mathematics, the future development prospects are still good. After all, mathematics is an upstream subject.

The degree of freedom for Zhejiang University to change majors is still relatively large, and it is relatively easy to change majors if you get good grades.