All schools give priority to one volunteer, and only when the school's major is not full and there are vacancies can it be adjusted. That is to say, you applied for Shanghai University as a volunteer, and you chose to transfer, but you failed the exam in the end, which means that your score did not meet the minimum requirements of the major you applied for in their school and the major you can transfer to. If you transfer again, you can't transfer to Shanghai University, and its transfer quota will only be given to those majors who have not applied in their school.