3C University: A C-level university composed of three universities.
1A, 2A, 3A, 1B, 2B, 3B refer to the results of universities. 1 stands for a key university approved by the Ministry of Education, which is commonly referred to as a school; 2 stands for non-key universities, which are usually called undergraduate universities, which are usually called two schools; 3 represents three colleges and universities; And A and B refer to the results of similar schools.
For example, 1A stands for the best school in a school (that is, the best school in a key university, such as Tsinghua, Peking University and Renmin University).
1B refers to a school that is one grade lower than the first-class school, but definitely better than the two schools, such as University of Mining and Technology and University of Petroleum.