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 Democratic People's Republic of Korea nationality by naturalisation. The law was amended on 23 March 1995. The law permits multiple citizenship, and specifies that nationality treaties with other countries take precedence over the text of the law. Due to the lack of normal diplomatic relations between the DPRK and Japan, Koreans in Japan with dual citizenship of the DPRK and Japan have had their requests to renounce Japanese citizenship in favour of solely retaining DPRK citizenship refused by Japan's Justice Ministry. It is also legally possible to renounce DPRK nationality; the DPRK issues certificates of loss of nationality in such cases, which may be required