20世纪20年代,是共产主义运动高涨的年代。1921年7月23日,中国共产党人在上海召开第一次全国代表大会,不约而同的是,也正是这一天,在远隔万里的法国,中国留学生的革命团体工学世界社举行年会,赞同以共产主义为目标,实行社会革命。主张最有力者就是蔡和森。后来成立的旅欧中国少年共产党,最早就是由蔡和森建议和拟名的。蔡和森——旅法共 The 1920s was a period of upswing in the communist movement. On July 23, 1921, the Chinese Communists held their first national congress in Shanghai. At the same time, it was exactly this very day that they held an annual meeting with the World Association of Engineering Sciences, a revolutionary group of Chinese and foreign students in France, To communism as the goal, the implementation of social revolution. The most powerful advocate is Cai Hesen. Later, the Chinese Communist Party for the establishment of the European Communist Party in Europe was first proposed and proposed by Cai Hesen. Cai Hesen - a total of France