I’m not sure if this has been covered before, but here in the mainland a popular mongering scene is through QQ girls. If you can speak basic chinese there are literally thousands of working girls in every major city working out of their flats, similar to HK. They get their punters through special QQ groups, many are invitation only, so you can only get in if you know someone. The girls advertise themselves on these groups and you can privately add them, and ask them for their location, price, services.. The prices range from 400-3000 CNY, depending on the girl. If interested, you can go meet her at the address provided. She will request you take a pic of the building to verify you’re there. Then she will inform you of her exact floor and apt number. Once you’re there don’t knock, the door will be quietly open for you and you can check out the girl. If all ok, most girls will ask for money upfront and then the action begins
Note that many pics are heavily photoshopped or fake, it’s often a hit or miss. But I’ve had some decent hookups from there. There are also many agencies offering high end models, SPAs clubs etc.. basically everything can be found in these groups. PM me if you need an invitation to any of those groups