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Mao Zedong in Yan'an Although there is no direct concept of popularization of Marxism, but in the study of Marxist theory Marxism of the study is to lay a theoretical foundation, and the popularization of Marxism to explore this process produced a series of push Marx popular method of doctrine, principles and approaches, popularization of Marxism so as to make the important theoretical contributions to Marxism for today's brought a lot of popular Enlightenment