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 dual BN(O) or status and Chinese nationality in Hong Kong (because the acquisition of BN(O) does not involve being "settled" in another country), and those who wish to naturalize in a country which requires the renunciation of foreign nationalities prior to approval (e.g. Japan) (because such persons have not yet acquired foreign nationality). In the latter case, the person must make a renunciation rather than a declaration. The cost for the declaration is HK$145 in Hong Kong and, in Macau, a processing fee of MOP 200 for the main applicant and MOP 100 per additional family member, plus a certificate