The transfer of graduate students has been confirmed. How to cancel the admission?

There is only one way to cancel the confirmed admission, that is, to call the enrolled school and tell the teacher that he can't be admitted to the school, and then tell the teacher the specific reason why he can't be admitted. If the school teacher agrees, cancel the admission of students, so that students will still enter the adjustment system. If the teacher is unwilling to cancel the admission, students have no choice but to enter this school, or they can choose not to go when they register, give up this school automatically and take the exam next year.