Hello, my friend! Hong Kong, Macao and Taiwan means that the household registration is not the mainland household registration, but Hong Kong, Macao or Taiwan Province Province. Overseas Chinese refer to people whose nationality is still China, but who have long-term residency in foreign countries, that is, China people who often live in foreign countries and have China nationality; Foreigners refer to people who do not have China nationality, that is, foreigners. I wish you a happy life ~