In modern China, Marxism is modified as the political ideology by the Chinese Communist Party to govern the party and the nation. The important concepts of Marxism, such as the ruling class and the ruling ideas, the material labor and the mental labor, superstructure and economic base, and the ideological state apparatuses, are used by the paramount leaders of People's Republic of China to create guiding socio-political theories which make up the Chinese Marxist Philosophy.
Two of the most important theories created by the leaders of China are: the Three Represents coined by the former leader of China, Jiang Zemin; and the Chinese Dream coined by Xi Jinping, the current General Secretary of the Chinese Communist Party.
These theories are sometimes mocked as "Lurxism" by Chinese netizens. The mockery is based on the historical idiom "Calling a deer a horse" that is from the story of the infamous Qin dynasty's bureaucrat Zhao Gao, as 'Ma' means a horse and 'Lu' means a deer.
https://en.wikipedia.org/wiki/Chinese_Marxist_philosophy
Just how important is Marxism within the China political system, and did the Chinese government ever do something against that ideology? When I look at the Chinese government, I don't see an ideological government, but rather a group of rulers who are extremely pragmatic, so I was wondering if some of their decision went against their official ideology.