April 5, 1927, the fourth day of March (Dingmao years), Chen Duxiu and Wang Jingwei "Joint Declaration". In April 1927, the leaders of the Communist Party of China, Chen Duxiu and Wang Ching-wei, chairman of the National Government in Guangzhou "Wang Jingwei, of Chen Duxiu Joint Declaration", a hard the said concealed adultery heart, speculation into the revolutionary ranks, is held and the imperialist comprador bourgeois conspiring counterrevolutionary coup of Chiang Kai-shek "absolutely no expulsion of friendly parties and the matter of the destruction of trade unions, the party and the people in a state of alert, so that Chiang Kai-shek in Shanghai launched" the April 12 the counterrevolutionary coup "to succeed.