This is not about it officially airing on Chinese TV, it’s about blocking it entirely from the whole of the Chinese Internet. You can’t even search for “South Park” and get any search results, not just on video sharing sites but on web search and social media sites as well. There’s another discussion on hacker news today that goes in the more details, it’s pretty scary the extent to which the Chinese government can wipe an entire topic off their corner of the internet. And with centralized chat systems like WeChat, your messages won’t go through either if they catch censorship algorithms. This effectively allows them to limit conversation about topics, which greatly hampers the Streisand effect everyone else is alluding to.