A very good friend’s mother is Japanese and her father is white American. That term really bugs her, so I use it often. I was walking through a neighborhood in Beijing when ahead I saw two black men talking. I thought, “There’s something you don’t see everyday, black Americans in China - I think I’ll go say hello.” As I walk up to them I realized they were speaking Chinese, and there a couple of mixed race kids playing nearby. Blew me away - black Chinese - I never even thought of it. My point is that we make an awful lot of assumptions based on some pretty flimsy evidence...
I’ve had the same experience in both Beijing and Taipei!