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 civil war, until it was revised in 2000 (see Nationality law of Taiwan for more details). From the establishment of the Communist regime on 1 October 1949 to 9 September 1980, China had no statutory nationality law except for the Sino-Indonesian Dual Nationality Treaty adopted in 1955, which was a bilateral treaty between China and Indonesia's Sukarno government instead of a statutory law. From the period between 1949 and 1955, China recognized dual nationality as did Taiwan, therefore the Treaty was the first regulation in Chinese history to ban dual nationality between China and other countries. On 10 September 1980,