Editing Internal passport (section)

====People's Republic of China====
{{Main|Hukou system|Custody and repatriation|Template:China and China-related Identity and Travel Documents}}
{{Missing information|section|居住证制度 ([local] living permit system)|date=February 2021}}

The [[People's Republic of China]] (PRC) maintains a system of residency registration in [[mainland China]] known as ''[[Hukou system|hukou]]'', by which government permission is needed to formally change one's place of residence. It is enforced with [[resident Identity Card|identity card]]s. This system effectively controlled internal migration before the 1980s, but subsequent market reforms caused it to collapse as a means of migration control. An estimated 150 to 200 million people are part of the "[[blind flow]]" and have unofficially migrated, generally from poor, rural areas to wealthy, urban ones. However, unofficial residents are often denied official services such as education and medical care and are sometimes subject to both social and political [[discrimination]].