Nationality law of the People's Republic of China of the Ninth National People's Congress on December 29, 1998. Unlike the UK, Portugal did not have an overseas nationality, which means that residents of Macau had the same type of Portuguese nationality as those in Portugal. Unique provisions include clarification for individuals of both Chinese and Portuguese descent, who may choose either Chinese or Portuguese nationality without losing right to abode. Negotiations between China and Portugal over Macau were considerably smoother than those between the United Kingdom and China over Hong Kong, and in the former a pragmatic practical agreement was understood making double nationality possible "de facto" for
Nationality law of the People's Republic of China China and another country for residents of Mainland China, due to the provisions for loss of Chinese nationality in Article 9 (see "Loss of nationality" above), and the stipulation that a foreigner who naturalizes in China cannot retain their foreign nationality (see "Naturalization" above), the number of dual nationals have, nevertheless, increased in recent years. This is mainly because birth tourism has become popular among Chinese nationals residing in Mainland China, who travel to countries observing "jus soli" to ensure their offspring acquires the birth country's nationality. If a person concurrently holds "de jure" Chinese nationality and foreign nationality or