I’ll explain this since I think the description is not good enough.
In certain country (in this case, mainland China again), the government has prepared for laws requiring all entertainment productions being censored and approved before publication, such as video games (It is the main reason Steam China exists), and other entertainment productions. (Here [in Chinese] is the page for PDF of proposal of new law in mainland China tighten the censorship) “Formal publications” is unlike the user activities such as comments and likes. (as well as normal posts) I don’t know how to describe this and I need help. I can only say the worst case is all sharing of culture productions must be approved before appeared in the service.
For the Steam China, I think it employed different policies and therefore should not be merged into main Steam service mostly for reason above. Here is the proposal: Steam China
Lastly and personally, I’ll be off for some days and unable to give more suggestions. Since the heavily information control has created people who are willingly to destroy the openness of the Internet, please take care of ourselves in the Internet.