According to the Measures for the Implementation of the Regulations of People's Republic of China (PRC) Detention Center:
Article 34. Correspondence between criminals and their close relatives living in China must be approved by the case-handling organ. If a prisoner requests a meeting, it must be approved by the competent bureau or director of the public security organ or the state security organ at or above the county level.
Meetings and correspondence between criminals and their close relatives living in Hongkong, Macao, Taiwan Province Province and foreign countries, or between criminals of foreign nationality and their close relatives, guardians and members of embassies and consulates in China must be approved by the public security departments and bureaus of provinces, autonomous regions and municipalities directly under the Central Government or the national security departments and bureaus.
Extended data
According to the Measures for the Implementation of the Regulations of People's Republic of China (PRC) Detention Center,
Article 38 If a detention center fails to entrust a case-handling organ to examine the letters sent and received by criminals, it shall hand them over to the case-handling organ for handling.
Article 39 A defender entrusted by a criminal or a defender designated by a people's court may meet and correspond with the criminal after receiving a copy of the indictment.
When a lawyer meets a prisoner, he must hold a work permit of a law firm (or legal advisory office) and a special letter of introduction in a fixed format; Other defenders who want to meet with detainees must hold a special letter of introduction from the people's court.
Lawyers and other defenders must meet criminals in detention centers with the permission of the people's courts. Detention centers should provide convenience, guard and ensure safety. After the meeting, the prisoner shall be handed over to the police on duty for imprisonment.
Guilin public security bureau website-convenient service center
Baidu Encyclopedia-Measures for the Implementation of the Regulations of People's Republic of China (PRC) Detention Center