Yan Sun is an associate professor at Peking University Institute of International Relations. 195 1 was born in Beijing. 1977 graduated from the Department of International Politics in Peking University in July. 1977 Since August, I have been teaching in the Department of International Politics in Peking University, and have been engaged in teaching and research on the history of the Communist Party of China and contemporary China's political diplomacy for a long time. Participated in the compilation of Soviet Union and China Revolution (1994), Sino-Russian Relations after the disintegration of the Soviet Union (1996), Taiwan Province Province in Political Gambling (1999), Hong Kong Model and the Future of Taiwan Province Province (2004) and From Alliance to Partner.