The world green card is the most difficult to rank.

The Administrative Measures for the Examination and Approval of Foreigners' Permanent Residence in China was issued in 2004, and a new round of opinions on the administrative measures began to be solicited in 2020.

According to the Administrative Measures for the Examination and Approval of Permanent Residence of Foreigners in China promulgated in 2004, one of the situations in which foreigners can obtain permanent residence in China is that their marriage relationship with China citizens has lasted for five years, and they have "lived in China for five years continuously, stayed in China for not less than nine months every year, and have stable living security and residence".

China is known as the most difficult country to get a green card in the world. From the implementation of the "green card" system in 2004 to the end of 20 1 1, only more than 4,700 green cards were issued, with an average of 248 cards issued annually. At that time, the foreign population living in China had reached 600,000.

Extended data:

The first winner of China's green card is Joan Hinton, an American nuclear physicist, a researcher and maker of the first atomic bomb in the United States, and a graduate student of the Institute of Physics of the University of Chicago. Joan Hinton came to China on 1948 and settled in China for a long time. In 2004, Joan Hinton obtained the first permanent residence permit for foreigners issued by China from Beijing Public Security Bureau. At this time, she has lived in China for 56 years.

In addition, green cards will also be issued to people who have brought economic development or made outstanding contributions to social progress in China for a long time. In 20 16, China issued green cards to two Nobel Prize winners. One is a chemist from the Netherlands, who has taught at East China University of Science and Technology in Shanghai for a long time and won the Nobel Prize in Chemistry for 20 16 years. The other is a Swiss scientist who did research at Shanghai University of Science and Technology and won the Nobel Prize in Chemistry in 2002.