What countries use Communism in today's world?

The countries that are using Communism are Laos, China, Vietnam, and Korea. Communism is based on Marxism, that the government controls all production and Communism itself means "Everyone owns every thing another person has". this would lead to Dictatorship. even though, the countries that use communism would end up with a good economy since everyone is willing to work for the gowernment