On this day, 98 years ago, on April 5, 1927 (March 4, 1927, the lunar calendar), Chen Duxiu and Wang Jingwei issued the "Joint Declaration." On April 5, 1927, Chen Duxiu, leader of the Communist Party of China, and Wang Jingwei, chairman of the Guangzhou National Government, issued the "Joint Declaration of Wang Jingwei and Chen Duxiu," insisting that Chiang Kai-shek, who harbors evil intentions and speculates on entering the revolutionary ranks, was plotting with the imperialist comprador bourgeoisie to hold a counter-revolutionary coup d'état,"never expelled his friends and destroy the trade unions," leaving the party and the people in a state of unalert, so that Chiang Kai-shek successfully launched the "April 12 Counter-Revolutionary Coup" in Shanghai.