In-service postgraduate examination, GCT refers to the postgraduate entrance examination, which is an examination method and a way for people with special occupations to take the postgraduate entrance examination, such as master of engineering, master of veterinary medicine, or teachers with medium titles. GCT is a part of the 10 joint exam, which belongs to a small part of the unified exam.

There is no unified recruitment for in-service graduate students, and the unified recruitment is full-time graduate students. Mainly refers to the unified recruitment education, including full-time general doctoral students, full-time general master students, full-time general undergraduate students and full-time general junior college students. The following qualifications do not belong to the unified recruitment: adult higher education, radio and television university (RTVU) and online education college. Simply put, it is the full-time entrance examination for graduate students.

Postgraduates do not take the self-taught examination, but the self-taught examination is only for junior college students and undergraduates. This is a self-study exam for higher education. It is a form of higher education that combines individual self-study, social assistance and national examination, and it is an important part of China's socialist higher education system. Self-study examination is an important part of China's higher education, a national examination system for higher education based on academic qualifications, and a form of higher education combining individual self-study, social assistance and national examination.