Because it is impossible for non-teachers to transfer to normal schools. It is possible to transfer normal majors to non-normal majors, but it is more difficult. Changing majors requires taking exams, and exam results can only be changed before the GPA test. Moreover, other majors can only be transferred if they have a place to transfer, and their grades are preferred, which is very difficult. However, some schools can transfer, depending on the school's relevant regulations on transferring majors. Some colleges and universities allow non-normal majors to switch to normal majors, while others do not allow non-normal majors to switch to normal majors.