Tbh OP, I really do not think this is racism. Oriental guys are hot (I'm black btw) and I know a lot of girls from various races who share this view. You may be slightly paranoid about them showing hatred towards you, perhaps because of the experience you had with the girl you were in love with and how it affected you. I have experienced racism, its not this. As long as no one of them has actually said 'I hate you because you are chinese' you can't conclude that any of them are racist, or even hate you. It could just be all in your head. Also you should move to London, you'll get way more female attention, might even be approached by a modelling agency if you have the fabulous cheekbones you've described.