Today, 75 years ago, on August 18, 1950 (July 5, 1950), the first congress of natural sciences workers was held. On August 18, 1950, the first congress of natural sciences workers in China was held in Beijing, 451 representatives from the major administrative regions of science, industry, agriculture, medicine, etc. attended the congress. The congress listened to the work reports of the academy and the industry, agriculture, health departments and discussed the establishment of various scientific and technological societies. The congress produced the Federation of National Natural Sciences Specialist Societies of China (referred to as the "National Union of Sciences and Technologies") and the National Science and Technology Popularization Association of China (referred to as the "National Association of Sciences and Technologies") and elected Wu Yue Cheng as the honorary chair