According to the Criminal Procedure Law of People's Republic of China (PRC)
Article 37 A defense lawyer may meet and correspond with a criminal suspect or defendant in custody. Other defenders, with the permission of the people's courts and people's procuratorates, may also meet and correspond with criminal suspects and defendants in custody.
If a defense lawyer holds a lawyer's practice certificate, a law firm's certificate, a power of attorney or a letter of legal aid to ask for a meeting with the criminal suspect or defendant in custody, the detention center shall arrange the meeting in time, which shall not exceed 48 hours at the latest.
In cases of crimes endangering national security, terrorist activities and particularly serious bribery crimes, defense lawyers should obtain permission from the investigation organ when meeting with the criminal suspect in custody during the investigation. The investigation organ shall notify the detention center of the above situation in advance.
When a defense lawyer meets a criminal suspect or defendant in custody, he can understand the case and provide legal advice. From the date when the case is transferred for examination and prosecution, the relevant evidence may be verified with the criminal suspect or defendant. Defense lawyers are not monitored when meeting with criminal suspects and defendants.
The provisions of the first, third and fourth paragraphs shall apply to the meetings and correspondence between defense lawyers and criminal suspects and defendants who are under surveillance.
According to the procedural provisions of public security organs in handling criminal cases
Article 217 With the approval of the person in charge of the public security organ at or above the county level, investigators may search the body, personal belongings, residence and other relevant places of criminal suspects and people who may hide criminals or criminal evidence.
Article 222 All kinds of property and documents found in investigation activities that can prove the criminal suspect's guilt or innocence shall be sealed up and detained; However, property and documents irrelevant to the case shall not be sealed up or detained.
If the holder refuses to hand over the property and documents that should be sealed up or detained, the public security organ may forcibly seal up or detain them.
Article 231 The public security organ may, according to the needs of investigating crimes, inquire about and freeze the deposits, remittances, bonds, stocks, fund shares and other properties of criminal suspects in accordance with regulations, and may require relevant units and individuals to cooperate.