The means of production become public property, but not everyone would want to work for public ownership. Ultimately, the Great Leap Forward made some progress in modernizing China after the civil war, but it resulted in a severe famine in China, in which approximately 20 million people died. To some extent, Engels' theory of socialism is correct, but in practice it seems that Engels has a rather optimistic view of human nature. I think that's one of the reasons why people's communes failed at that time. In conclusion, Engels realizes that human beings always desire to make their own history and control their own destiny. However, he believes that humans still develop according to a "hidden plan". Only when human beings achieve socialism will human beings achieve total freedom, which is also the ultimate goal of socialism. It provides an admirable utopian future for human beings. Although in my opinion it is a utopia, given what happened in China in the last century. However, humans will always try to control their own destiny. The point is that human beings should always try to be