Why do Hong Kong people treat tanned Asian females like sh!t?

I was born in HK but grew up in the US. More specifically southern California. So like every Asian kid here who's not FOB, I'm quite tanned. And I got only tanner after I visited Taiwan coast for a week without an umbrella before I flew to HK. Once I reached HK, for the entire week, I was glared at, muttered at on the subway train as "not having wash herself properly" by guys with the same color tanned (Hello! I speak flawless Cantonese too and I can understand you!) and was forced to wait for a very long time at restaurants. My family usually wait until everybody got their food before they eat and they were forced to wait with me. And even when the food came, a drink was ALWAYS missing. All the guys there were as tanned as I was yet I was treated like I was wearing a scarlet letter of some unspeakable crime or something. I wanted to push my flight forward basically by the end of the second night I was there.