Nanxin University failed to retake the exam. According to relevant public information, Nanxin University allows students to take make-up exams, and students can take make-up exams according to the time and content stipulated by the school. For example, you can get course credits by taking make-up exams. The revision of Nanxin University means that after normal study, students can choose to study the course again and take the exam again in order to improve their course scores, so as to get higher grades.