The October Revolution was the first successful socialist revolution in human history. It established the first socialist country led by the proletariat, opened up a new era for mankind to explore the socialist road, spread Marxism–Leninism to the whole world, and greatly shocked the capitalist world. The October Revolution declared to the whole world that a brand-new social system has changed from an ideal to a reality. This is the first time in human history to eliminate the unequal society of exploitation and oppression, and to try to build a fair, just and prosperous society for the first time. 6. The October Revolution dealt a heavy blow to imperialist rule and greatly inspired the international proletarian revolutionary movement and the liberation movement of the oppressed people in the colonies and semi-colonies. [6] It changed the development direction of Russian history and transformed Russia in a socialist way, which had a great impact on the development of the whole human society. [6] In 1949, Mao Zedong wrote this passage: "The October Revolution brought us Marxism–Leninism with artillery. The October Revolution helped the advanced elements in the world and China, and used the proletarian world outlook as a tool to observe the destiny of the country and reflect on their own problems. Take the road of Russia-this is the conclusion. " [6]