Yeah. Tamped down hard.
I only knew about it because I was stationed in Japan and was an S2 (intel) clerk.
It wasn’t classified info but in that job slot there was an info stream other than classified that was constantly flowing too.
The conversation it came up in was in relation to how wide spread the more ancient pagan practices quickly became in the rural areas during the Cultural Revolution, including human sacrifice and ritualistic cannibalism.
It was posted here some years back also. Couldnt tell you OP, source was a video being distributed by some religious org. The type still beyond the trees didnt believe then and iirc some of them believed it to be a hoax disguising a fund raiser.