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 Chinese citizenship as a matter of law under Article 9, but in practice, for such foreign citizens who return to reside in Hong Kong, such change of citizenship is only recognized within Hong Kong after making a declaration of the change of nationality at Hong Kong's Immigration Department. Once the declaration is made, such persons would be released from their Chinese nationality. As under the Interpretation, the relevant forms of British nationality are not recognized as acquired after "settling" in a foreign country: the British Nationals (Overseas) status held by people of Chinese descent born in China (including Hong Kong),