Marxism is a great creation in human history and the most outstanding achievement in the history of human civilization. Every major breakthrough in Marxist theory and every historic leap in socialist practice is the result of theoretical innovation achieved by combining the basic principles of Marxism with concrete reality. The more than 100 years of struggle of the Communist Party of China, the more than 70 years of development of New China, and the more than 40 years of reform and opening up have fully proved that integration is the true meaning of adapting Marxism to the times.