One of the historical achievements: it has opened up a new era of socialist modernization, established the basic socialist system and opened up a new historical era in which the people of China are masters of their own affairs. Thus, the new great revolution of reform and opening up led by our party has opened a new historical period of self-improvement of the socialist system and socialist modernization. The second historical achievement: Since exploring a correct Socialism with Chinese characteristics road and entering a new era of reform, opening up and socialist modernization, our party has established the ideological line of emancipating the mind and seeking truth from facts based on the national conditions and gradually getting rid of the Soviet model, and has made arduous explorations on the road of Socialism with Chinese characteristics. The third historic achievement: the establishment of Socialism with Chinese characteristics's theoretical system. Great times call for great theories, and great practice breeds great theories. Socialism with Chinese characteristics's theoretical system is the theoretical crystallization of our party's promotion of Socialism with Chinese characteristics's great practice in the new historical period of reform and opening up. The fourth historical achievement: to realize the prosperity of the country and the prosperity of the people, reform and opening up is the key choice to determine the fate of contemporary China and the only way to develop Socialism with Chinese characteristics and realize the great rejuvenation of the Chinese nation; The great creative practice of reform and opening up has profoundly changed the economic and social outlook of China, making the country rich and the people rich.