A bit hard to find open, unbiased, and independent information about a country that forcibly suppresses anything negative about itself, isn't it? Jack Ma criticized the government and suddenly disappeared for years losing his position at the company in the process. If they can do that to one of the most powerful people in the country, they can do it to anyone else.
https://en.wikipedia.org/wiki/Jack_Ma#Disappearance_from_the...