Legal basis: Article 75 of the Criminal Procedure Law of People's Republic of China (PRC) stipulates that residential surveillance shall be conducted at the residence of the criminal suspect or defendant; If there is no fixed residence, it can be executed at the designated residence. If the execution of a crime suspected of endangering national security or terrorist activities may hinder the investigation, it may also be executed at a designated residence with the approval of the public security organ at the next higher level. However, it shall not be carried out in detention places or special places for handling cases. If the designated residence is under residential surveillance, the family members under residential surveillance shall be notified within 24 hours after the implementation of residential surveillance, unless it is impossible to notify them. The provisions of Article 34 of this Law shall apply to criminal suspects and defendants under residential surveillance who entrust defenders. The people's procuratorate shall supervise the legality of the decision and implementation of residential surveillance in designated residences.