A detention center refers to a place where the public security organs detain specific people for short periods of time in accordance with the law. Detainees include: persons in criminal detention. Criminal detention is a coercive measure used by the public security organs to restrict the personal freedom of current criminals or major suspects in emergency situations.
The purpose of a detention center is to prevent current criminals or major suspects who should be arrested from evading investigation, trial or continuing to engage in criminal activities. When the public security bureau detains a criminal, it must produce a detention permit and order his signature or seal. After detention, the detainee's family members or his/her unit shall be notified of the reason for detention and the place of detention within 24 hours, unless notification is not possible due to impediment to the investigation.