It seems Japan redacts genitalia, but not breasts. South Korea is more lenient.
Anything you see with genitalia and claims to be Chinese comes from Taiwan. Porn in mainland China is a huge no no. Post something even mildly pornographic in China or North Korea, and you go to prison, at best.
What @Espiritus_Corvus said. And porn is illegal in my place too, or at least it traditionally is. Things have seemed to be loosening up now with some books from Japan being rated +18 they get off the hook because there are only words, but they are still limited. In some cases people can draw clothes on the “suggestive” art too.