1, Nine Universities Alliance (C9), including nine universities, namely Peking University, Tsinghua, Fudan University, Jiaotong University, Nanda University, Zhejiang University, China University of Science and Technology, Harbin Institute of Technology and Xi Jiaotong University.

2. The Nine Schools Alliance is similar to the Ivy League in the United States, Russell University Group in the United Kingdom and Eight Schools Group in Australia. It aims to strengthen cooperation and exchanges in the fields of personnel training and scientific research, with complementary advantages. It is internationally known as China Ivy League School.

3. After the establishment of 3.C9 Alliance, many substantive activities such as exchange students, seminars and summer camps were carried out.