Chinese, Korean and Japanese girls

In general, which Asian girl is easiest to lay? I've heard two extremes about any of these girls, with nothing in-between. People seem to think that either Chinese girls (for example) are super easy and will basically go after you, or that they're hard and really conservative.
I'm wondering which girl, in general, are easier if you're not planning on marrying them? I heard Chinese girls are easy, but if you have sex, you're expected to marry them.
I'm planning on teaching English in Asia, probably in China, but I don't want to go multiple years with 0 sex.
Anyone have any information?

 

Asian girls have such perfect skin & they look more like a doll. The petite ones sometimes are more like young bodies with added extras - pubic hair & breasts.

 

Don't.