Sex live-streams in China/Korea... has anyone heard of these before?

Keep in mind that I don’t have extensive knowledge in porn at all, this could be completely normal and I would have no idea.

So basically I was just browsing a porn site, as you do, when I stumbled across this whole “BJ” thing, not what you’d think it is, it looked like live-streams. Curiosity tends to get the better of me most of the time, so I started scrolling and came across a bunch of videos of young chinese/korean guys/girls (as in a girl x girl, or guy x guy) would have sex with each other on livestream. but they are so clearly not enjoying it, half the time they’re on their phones during the act, or are just looking at themselves in the camera. The guys usually can’t even get hard enough to have sex, and would usually have to watch porn with girls in it to actually finish. For some of the guy ones there was a guy talking over everything in mandarin non-stop so idk wtf he was saying, my mandarin is not advanced enough to understand the waterfall of words coming out of his mouth. It was just really uncomfortable to watch. So the whole thing weirded me out, and I have so many questions. Are they making bank off this or something? That’s why they’re doing it even though they clearly don’t enjoy it? Is there a huge market for this in China/korea? I know there’s huge censorship rules in place in China, and that porn is illegal in korea, so there must be some kind of loop hole that this stuff is allowed? Lmfao sorry if this is weird but it sparked my curiosity in a weird way