China database lists 'breedready' status of 1.8M women
theguardian.com
theguardian.com
So basically child bearing age or not.
Is FB use that common in China? It's my understanding that a tedious workaround is required for Facebook, Line, and other forbidden social networks.
When I worked in China, I say most of my team had FB profiles. Then again I was working for a major Chinese IT company and we had a lot of foreign collaborations in open source stuff.