Legal basis: Police Law of the People's Republic of China.
Article 7 The people's police of public security organs may, according to law, impose administrative compulsory measures and administrative penalties on individuals or organizations that violate public security administration or other laws and regulations on public security administration.
Article 8 People's police of public security organs may forcibly take away, detain or take other measures prescribed by law against persons who seriously endanger public order or threaten public safety.
Article 9 In order to maintain public order, the people's police of the public security organ may interrogate and inspect the persons suspected of violating the law and committing crimes on the spot upon showing the corresponding certificates; After cross-examination and inspection, in any of the following circumstances, with the approval of the public security organ, it may be taken to the public security organ for further cross-examination:
(1) Accused of a criminal act;
(2) Being suspected of committing a crime on the spot;
(3) Having an unidentified suspect;
(4) The articles carried may be stolen goods.