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 by the Standing Committee of the National People’s Congress Concerning the Implementation of the Nationality Law of the People’s Republic of China in the Hong Kong Special Administrative Region", a supplement nationality law document applicable only to Hong Kong residents, states that any Hong Kong resident who "is of Chinese descent and was born in the Chinese territories (including Hong Kong)", before or after the Handover, is a Chinese national with right of abode in Hong Kong. An equivalent provision relating to Macau residents appears in the "Explanations of Some Questions by the Standing Committee of the National People’s Congress