Implement professor governance. Give up the grade system and adopt the course selection system. The elective system stipulates that there is one class hour per week, and after one year of study, it is a unit. Undergraduate students have to complete 80 units, half of which are compulsory and half of which are elective, and they can graduate after completion; The preparatory course should complete 40 units, of which three quarters are compulsory and one quarter is optional. Elective courses can cross departments.