Teacher Wang Jingai from Beijing Normal University will study for 3 years. Because at present, the management of doctoral students in China adopts a loose management mode of tutor leading students. Basically, students spend one year in class and two years studying papers with their tutors. Most of the third-year papers can be replied if the quantity and quality are qualified. The doctor's degree of Mr. Wang from Beijing Normal University is the same, so the doctor's degree of Mr. Wang from Beijing Normal University takes three years.