If the students in the same major are regular teachers.

Interview instructors are randomly assigned to prevent illegal activities such as entering the back door. Generally speaking, the interview instructors for postgraduate entrance examination and re-examination are determined according to the direction of students' application, but each re-examination group is composed of five to seven people. Except that the interview team leader is the main person in charge of the research direction or the department head, other interview instructors can change the interview team at will, so it is more arbitrary.

Postgraduate re-examination is an important part of the postgraduate examination system, that is, the second examination organized by the applicant institution after passing the postgraduate entrance examination (initial examination). Generally, it is also divided into written test and interview. Most of the early postgraduate re-examination is a form, but since 2006, graduate enrollment has increased the weight of re-examination, and some enrollment units even increased the weight of re-examination to 50%, which requires candidates to have real talent and higher adaptability.