76 years ago today, on November 1, 1949 (September 11, 1949 lunar calendar), the Chinese Academy of Sciences was established. On November 1, 1949, the Chinese Academy of Sciences was established in Beijing, which is a comprehensive research center of China's highest academic leadership institution. The first president, Guo Moruo, and vice presidents, Li Siguang, Tao Menghe, Zhu Kezhen, Chen Boda, etc. The Academy of Sciences under the Design and Planning Bureau, Compilation Bureau, Liaison Bureau and other units, and the former North China University Research Department, Aquatic Biology Survey Institute, the former Beiping Research Institute, the former Academia Sinica and other institutes, the former China Geography Research Institute and other units, adjusted and merged into Geography, Physics, Chemistry, Biology, Philosophy, Sociology and other 5 research units 15 research units. Subsequently, mathematics, psychology, geography and other research institutes were established. Each research unit consists of several research institutes and offices. It is mainly engaged in the research of major comprehensive topics in natural science, philosophy, social science, basic science, emerging technologies, national economy and national defense construction.