I started using the HelloTalk app (basically a social network for language learners) to find some practice partners after learning the basics on my own, and oh man was I shocked

The shear amount of single Chinese women, mostly aged 25-35, on that site looking for boyfriends was absolutely stunning. And here's the rub. I used to regularly chat with Filipinas or Latinas, and it was clear that the ones going after foreigners were, let's say, not well off. But most of the Chinese woman that have contacted me (20-30 per day, easily) speak good English, have good jobs, usually have their own condo and/or car, and to top it off, are usually very, very attractive, and don't have intentions of leaving China. Not exactly the free-loading, visa-seeking type.
When I ask them "Why not find a nice Chinese guy" they all say one or more of the following: Chinese men are inconsiderate, not attractive, violent, not manly etc., which is fine, but it just seems completely backwards that it's the gorgeous, successful women who have trouble getting married, whereas in the USA it's the complete opposite - the ugly women have trouble getting married.
Anyone have any insights into the situation?