If you apply for the A-class area and cross the A-class national line, but just don't cross the school line, you can transfer to other universities in the A-class area. However, if there is no Class A line, if there is a Class B national line, universities in Class B and Class C areas can transfer, and if there is only Class C line, universities in Class C areas can only transfer. The fractional line mentioned here means that the total score and the scores of four subjects should be separated, and none of them can be passed. Changing majors depends on whether the first two professional codes of the changing major and the original registered major are the same, and the same ones can be changed.