On the Chinese Secret Society's Understanding and Practice by Mao Zedong during the Democratic revolution time

During the democratic revolution time,the process of the Chinese Secret Society's Understanding and Practice by Mao Zedong may divide into 4 stages,which are that the worker and peasant movement time,the separatist regime time,the Sino-Japanese War time and the war of liberation time.It has 4 characteristics such as succeed and development to the historical successful experience,distinguishes between the secret members of different social classes and so on.This is a significant contribution to the democratic revolution,and is a part of Mao Zedong Thought.