2a University refers to a non-key university, that is, an ordinary undergraduate university, which is what we usually call two universities. 1a University stands for a key university approved by the Ministry of Education, which is what we usually call a school. 3a University represents three institutions.

Universities are institutions of higher education that provide teaching and research.

A university refers to an ordinary institution of higher learning. This is an organization with unique functions. It is an institution of higher learning that inherits, studies, integrates and innovates advanced academic knowledge, and is interrelated with social, economic and political institutions. It is not only the product of the development of human culture to a certain stage, but also a unique culture gradually formed on the basis of long-term school-running practice through historical accumulation, self-efforts and external environmental influence.

Supplementary information:

Common 2a universities mainly include: Guangdong University of Finance and Economics, Guizhou Medical University, Chongqing Medical University, Wannan Medical College, Guangdong University of Finance and Economics, sichuan fine arts institute, Binzhou Medical College, Kunming University of Science and Technology, Shanghai Lixin Accounting College, Chongqing University of Technology, Shandong University of Traditional Chinese Medicine, Shanghai Business School, Hainan University, East China Jiaotong University, Wenzhou University, shanghai second polytechnic university, Wuhan University of Light Industry, Chongqing Normal University, Hubei Medical College, Xi 'an University of Finance and Economics, Nanchang Hangkong University, Weifang Medical College, Guilin University of Electronic Technology, Xiamen University of Technology, Xi 'an Medical College, Chengde Medical College, Jiangsu Normal University, Guangxi Normal University, Beijing University of Chinese Medicine, chongqing technology and business university, Hebei Medical University and Hebei North College.