I would think Chinese. That is what I would want to be called if I was a black guy from China. @filmfann said “Afro-Asian?? I would just ask them what they want to be called and try to keep it straight in my damaged memory just like I do “African American” vs “black” (not everyone wants to be called the same thing).
From what I can see, America is the only nation that has to stick “African” before “American.” I do not know of any “African British” people, for example.
Referring to only black people only as “African” is incorrect. There are white people from Africa as well. I am certain there are people of other ethnicities kicking around there as well. African is actually not an ethnicity… it is a nationality. That is kind of like “Irish/Italian/Mexican/etc-Americans: the first word is a nationality, not ethnicity.
I just do not see a need to identify both my ethnic heritage and nationality every time I open my mouth. When I am asked what I am, if they are referring to nationality I say American. If they are referring to ethnicity, I say Rromani Gypsy (usually just “Gypsy” if someone knows what we are). If I was black, white, Asian, etc., it would be the same.