Well, I don't really know how it would be for other "races", even if i don't really like that word to be used.
Maybe is it more difficult for black people, maybe not...
I just can admit that i'm white colored and that, as I'm not american/english, may persons don't really know where is France exactly...
but what I like is the "challenge" to be there and to be with a chinese lady, plus, to marry her and to prove that yes, white man can marry a chinese lady, whatever he's american/irish/english/french/german/swedish/danish/australian and so on...
In fact, and I don't really want to create any "problems" by saying it, but man can be black/white/yellow colored, I think we're all on the same boat, many difficulties can come to us once we'd like to be with any chinese lady, and maybe can it be more or less difficult, depending if man is black... or not.
Anyway, even if I would be black/yellow skin, for sure, I'd do all my best to go in China and to prove that, at first, I'm human before having a colored skin.