In general, data on international migration in China are limited. The Entry-Exit Administration classifies foreigners in China into short-term migrants, long-term migrants and permanent residents. Emigrants from China include tourists, those visiting relatives, students, workers, permanent residents, Xinyimin (new emigrants or those who left China from 1978 to live permanently abroad), and Chujing (leaving the border or Mainland Chinese bound for Taiwan, China; Hong Kong (China) and Macau (China). The census does not collect information on international migration. Furthermore, data on unauthorized migration into and from China are unavailable. China needs an agency that would coordinate the collection of data on international migration.