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 case, their non-Chinese nationality or citizenship is simply ignored by the Chinese authorities. Further, Hong Kong and Macau residents who acquire foreign citizenship while settled abroad, and who therefore legally lose Chinese citizenship under Article 9 are, in practice, treated as Chinese nationals unless they undertake the administrative step of notifying the change of nationality to the authorities of the respective territories. The declaration is not enforced, so such persons who return to reside in Hong Kong and Macau are treated as Chinese nationals owing to Article 3. Although it is generally difficult to have "de facto" dual nationality of