Secondary Nine University mainly refers to 65,438+09 universities such as Wuhan University, Xi Jiaotong University, Sun Yat-sen University, Harbin Institute of Technology, Huazhong University of Science and Technology, Beijing Institute of Technology, Southeast University, East China Normal University, Xiamen University, National University of Defense Technology, Tianjin University, Harbin Institute of Technology, University of Electronic Science and Technology of China, Beijing University of Posts and Telecommunications and South China University of Technology.