I don't know, you tell me. Because you just showed how a Chinese person becoming an American is no longer Chinese, but American.<quoted text>Because ethnicity and nationality are two separate things.
Ethnicity - n. 1. Ethnic character, background, or affiliation.
Nationality - n. 1. The status of belonging to a particular nation by origin, birth, or naturalization.
How does it feel to literally be less educated than a first grader?
Ethnicity: affiliation - that Chinese person is now affiliated with America.
Nationality: naturalization - that Chinese person is now a nationalized American.