In before
@Camile.Bidan comes in with skull shape analysis?
Black Chinese most definitely exist in South China, and the rest of Southern Asia. What I don't think people realize is how recent this was. Were taking at least 2-3 thousand years ago, the Black Asians still had significant populations and weren't yet isolated to small islands and mountains.
We are taking about a total-wipe that has been nearly undocumented by history. The only remaining evidence is the legacy that they have left on the populations that still exist on the land they once called theirs. You can see in the brown skin, lips and noses of the south east Asians and some of the southern Chinese. You can definitely see it in the legacy of the Polynesians. In fact, I wonder if many people in South East Asian didn't at one time look more like Polynesians, until more and more waves of northerners started to breed out those features.
Now, these are facts. Go to a Asian Community and speak of these facts, and then and all kinds of prejudices will surface. I guarantee nobody on an Asian board would mind being part European.
Filipinos love to talk about being part spanish. However, let them know about all recent evidence showing that they have some of the highest frequencies of Black Asian genes and see what reaction they will give you.