 On June 1, Stalin sent a telegram to the Communists in Wuhan, calling for mobilisation of an army of workers and peasants.This alarmed Wang Jingwei, who decided to break with the Communists and come to terms with Chiang Kai-shek.More than 10,000 communists in Canton, Xiamen, Fuzhou, Ningbo, Nanjing, Hangzhou and Changsha were arrested and executed within 20 days.