During 1966-1976 The Great Proletarian Cultural Revolution happened. What caused The Great Proletarian Cultural Revolution to happen and get really serious was in 1958 after the first five-year plan. In the beginning1957, Mao made his plan to modernize China. In that same year and the years to follow, Mao promised to get a better economic system, let everyone have the same amount of wealth, and the conditional development of the country, then surpass ofter countries. then in the early 1960s, because China was struggling from the five-year plan, Liu Shaoqi, Deng Xiaoping, and Premier Zhou Enlai gave economic policies to the great leap forward that they were planing. These leaders didn’t really agree with Mao’s opinions and visions. In 1962, when Zhou Enlai, Liu Shaoqi, and Deng Xiaoping were in charge of the economy, Mao had decided to start a revolution into making China a better country. Then what happened next is in this video.