China

This is something I occasionally come across in Western media and also heard IRL from a Chinese émigré (very lib and hates China, so I take whatever they say about the country with a grain of salt) - that the Chinese internet (and by extension, society, though probably less visibly) has a problem with widespread chauvinism and racism, against black people and ethnic minorities in China in particular, and other things such as wishing genocide on the people of Taiwan (???) or Japanese people.

Now, I'm sure China has its fair share of fascists and generic reactionary nutjobs, but I'm wondering just how bad it is. Most studies/articles come from Western institutions, so I don't know how to feel about those.

I'm curious what studies there are in China about this, how widely discussed this is (i.e. have these sorts of internet trends ever gotten the same level of awareness that 4chan and the alt-right got in the West? What was the reaction? Is the CPC doing anything about it?), and what direction is this going in, e.g. looking back 10-20 years, has this improved or gotten worse?