Jing Tian, a famous postgraduate English teacher, lectured on navigation education, and was the former teaching trainer of New Oriental Group. He taught postgraduate English, CET-4 and CET-6, new concepts and other courses, and wrote a series of postgraduate books, especially long and difficult sentences.

Postgraduate entrance examination generally refers to the national unified postgraduate entrance examination. The national unified postgraduate entrance examination (hereinafter referred to as "postgraduate entrance examination" or "unified examination") refers to the general name of relevant examinations organized by the education authorities and enrollment institutions for the selection of postgraduate students.