According to the relevant regulations of the Ministry of Education and the Ministry of Personnel, the positions of college teachers are divided into 13 levels. Professorship is divided into one to seven grades. Among them, full professor positions include grades one to four, and associate professor positions include grades five to seven; Intermediate posts are divided into three grades, namely, eight to ten grades; The junior post is divided into three grades, namely 1 1 to 13. According to the regulations, only academicians can meet the relevant evaluation standards, while there are basically no first-class professors in liberal arts. Selection criteria of first-class professors First-class professors are the highest level in professor titles. Professors who are rated as first-class professors are generally academic leaders, that is, academicians. According to the regulations, only academicians can meet the relevant evaluation standards, so there are many disciplines related to natural sciences, and there are fewer first-class professors in social sciences and humanities. The basic requirements for the post of second-level professor are divided into two categories: one is that the professorship of professional and technical positions has been full 10 years, and the other is that the professorship has been less than 10 years and has been full for 5 years. Details are as follows: