I installed it like few days ago in hope to establish some unfiltered communication to home, and I already want to uninstall it, because deleting the offers that start coming after midnight is just an annoying hassle. I think it's a fine app to use, but never, ever do a location search after the sun is down.

(That is, if you're not interested in the serivces. If you are, then I guess WeChat is paradise on Earth for the Laowai.)

That's how it actually works. You don't even have to do anything. Just opt-in to temporarily share your location by running a "people in the neighbourhood" scan. "Girls" start writing to you offering "door-to-door full range of services".

I say "girls" because I strongly suspect those are fake accounts run by some agency that will dispatch actual workers to you when you agree for the service. I think so, because otherwise China has a really big evening employment and entertainment problem.