105 years ago today, June 29, 1920 (May 14, 1920, the lunar calendar), China joined the League of Nations. On June 29, 1920, China joined the League of Nations. The League of Nations, referred to as the "League of Nations", was officially established in January 1920. With the signatories of the Treaty of Versailles as the main body, 63 countries have participated in it, and its headquarters is in Geneva, Switzerland. China sent Wang Zhengting, Gu Weijun and others as members.