The shape of the cabinet system in the Ming Dynasty, which was followed by the university students in the Qing Dynasty, did not follow the actual spirit of the cabinet system in the Ming Dynasty. College students should be treated as prime ministers, but they don't have the functions of prime ministers. Especially after the establishment of the Ministry of War, the cabinet of the Qing Dynasty basically had no function, and at most it played the role of minor matters in posthumous title after the death of the drafting minister. Therefore, the Qing dynasty believed that he was the real prime minister only when he became a college student and entered the military department. In the Qing Dynasty, college students usually co-chaired two halls and two museums. From high to low, there are Wenhua Hall, Wuying Hall, Wen Yuan Hall and Tijen Hall. There are also two co-chairs of college students. College students usually need people with Hanlin background. For those who failed in the imperial examination but achieved outstanding results, they can only be appointed as Tengger University students, such as Zuo, because they are only jurors, so they can enter the cabinet because of their merits. The achievement of a college student is a positive product, which is the so-called extremely important person.