Kim Il-sung University
, there are an estimated 4,000 to 5,000 North Koreans residing as legal resident aliens in China. An increasing number are applying for naturalization as Chinese citizens; this requires a certificate of loss of North Korean nationality, which North Korean authorities have recently become more reluctant to issue. Major North Korean universities, such as the Kim Il-sung University and the Pyongyang University of Foreign Studies, send a few dozen exchange students to Peking University and other top-ranked Chinese universities each year.