Just my opinion, a lot of the China ladies "seem" to be more innocent and less materialistic (at the beginning) due to the fact that they came from a very restrictive country without knowing how the "real" world works. Once they get used to it and found out about what they're really "worth", a lot of them just transform into something worse than "港女"....
it is possible. many of mainland girls in Canada are actually extremely rich. some of them are already very superficial and materialistic in the beginning, especially those from shanghai.
anyway, ...
For those mainland girls...I don't think many of us here will have a chance...