Legal basis: Article 96 of the Criminal Procedure Law of People's Republic of China (PRC) involves state secrets. A lawyer meeting with a criminal suspect in custody shall be approved by the investigation organ.
Article 43 of the Procedures for Handling Criminal Cases by Public Security Organs: For cases that do not involve state secrets, lawyers do not need to approve the meeting with criminal suspects, and public security organs may not refuse to approve cases that involve state secrets on the grounds that confidentiality is needed in the investigation process.