I don't believe the odds of China #1 are 100%, but... >I do not want to lose business and professional opportunities because I am not Han. I don't think this

I don't believe the odds of China #1 are 100%, but... >I do not want to lose business and professional opportunities because I am not Han. I don't think this will be as big of a problem as you expect it to be. Do you have any western Han friends who do business in China? Being Han isn't going to stop others from trying to screw you over, even if you aren't Western. If you're actually worried, then your main concern should be learning Mandarin. I think only a few demographics will experience the racism that you fear.