"China's Big Four" in the Republic of China
The "China Big Four" in the Republic of China included Peking University, Tsinghua University, Central University and Zhejiang University.
C9 Alliance after Liberation
After liberation, there were no four universities in China, but there were C9 alliances, namely, Peking University, Tsinghua University, Zhejiang University, Nanjing University, China University of Science and Technology, Shanghai Jiaotong University, Fudan University, Xi Jiaotong University and Harbin Institute of Technology. These universities are nine Ivy League schools supported by the state.