Nationality law of the People's Republic of China East Asian nationals of Chinese ethnicity are not Chinese nationals (although some may qualify for nationality of Taiwan) through their Chinese grandparents. British National (Overseas), a status currently held by many Hong Kong residents, is considered a type of British nationality by countries other than China, nearly 3.4 million Hong Kong residents were registered as BN(O)s before the handover of Hong Kong. Most of those people also have Chinese nationality, making them one of the largest group of dual nationals in the world. Portugal has never created an various classes of nationals nor has Portugal revoked Portuguese citizenship from Portuguese
Nationality law of the People's Republic of China citizenship in another country does not lose Chinese nationality. As Article 3 states that China does not recognize dual citizenship, under Chinese law the foreign nationality is not recognized. For example, in 2006, a Chinese citizen who was not settled in Guinea Bissau, but who acquired Guinea Bissau nationality (under local law) by virtue of an investment migration scheme, attempted to enter China on a Guinea Bissau passport and Chinese visa. Chinese border control confiscated the Guinea Bissau passport, on the basis that the person remained solely a Chinese citizen under Chinese law, and so it was illegal for that