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In page Chen Duxiu:

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In 1927, after the Shanghai massacre, he and other high-ranking Communists, including Mao Zedong and Mikhail Borodin, collaborated closely with Wang Jingwei's Nationalist government in Wuhan, convincing Wang's regime to adopt various proto-Communist policies. The Wuhan government's subsequent land reform policies were considered provocative enough to influence various KMT-aligned generals to attack Wang's regime, suppressing it.[2] Chen was forced to resign as General Secretary in 1927, due to his public dissatisfaction with the Comintern order to disarm during the April 12 Incident, which had led to the deaths of thousands of Communists – now known as the Shanghai massacre of 1927, and because of his disagreement with the Comintern's new focus on peasant rebellions.[citation needed]