They don't discuss it or care about it.
I managed to get a hold of the political syllabus for universities in China to understood how this is taught, there were 3 main textbooks - one was a summary of Marx and Lenin, one was Chinese Marxism from Mao Zedong Thought, Deng Xiaoping Theory, the Three Represents, Scientific Outlook on Development and presumably Xi Jinping "thought" (the most vacuous of all of those) takes centre stage these days. The third was about moral development and not really overtly political, however seemed quite Confucian.
The Marx/Lenin one is almost unreadable and essentially repeats the same things over and over again. It doesn't attempt to demonstrate the validity of Marxist theory with any real world examples, and class struggle is relegated to a fairly minor position. It seems to rely heavily on Dialectical Materialism, which fits in nicely with the economism of the time (this was from a few years ago). "Economic base determines superstructure" is the most commonly heard use of Marxism in Chinese universities. I've also heard it used as defense of policy in Xinjiang, essentially saying that economic growth is the most important. (I wonder if this has changed now that Xi seems to be emphasising international conflict and struggle over economic development).
For the other stuff, only Mao Zedong Thought relates to class struggle but it tends to be taught in terms of the struggle against imperialism. I.e. the capitalist and landlord class had become tied to imperialism so the peasants had to be the revolutionary force. This isn't given much more weight than the theories of the leaders since Mao who don't mention class struggle at all really.
Socialism has been redefined to essentially mean "rule of the Communist Party" and people don't really see any contradiction between socialism and China's vast inequality. I've even heard people think that welfare state is a characteristic of decadent western capitalism as opposed to the self reliant and hard working Chinese socialism.
