Naturalization
Naturalization is possible, but rare. During the Fifth National Population Census of the People's Republic of China (2000), only 941 naturalized citizens not belonging to any of China's recognized 56 indigenous ethnic groups (which includes Koreans, Vietnamese, and Russians) were counted in China's mainland. More foreigners have applied for naturalization to Chinese nationality since Hong Kong has reverted to Chinese sovereignty in 1997. Among Hong Kong residents from 1997 to 2012, 3,411 Pakistanis, 3,399 Indonesians, 2,487 Indians, 1,115 Vietnamese, and 387 Filipinos have been naturalized.
Foreigners who naturalize in China cannot retain foreign nationality (Article 8).
Read more about this topic: Nationality Law Of The People's Republic Of China