What are the restrictions on lawyers' meeting in the investigation stage?

What are the restrictions on lawyers' meeting in the investigation stage? In the investigation stage, general criminal cases can be met without restriction, as long as they are on duty; 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. However, in all criminal cases, from the date of transfer for examination and prosecution, there is no restriction on interviews, and the specific number depends on the needs of handling cases and defense. (1) Meeting place (1) When meeting a criminal suspect living under surveillance, the meeting can be conducted at his residence or the place of residence under surveillance designated by the investigation organ. Others should not attend the meeting, but if the criminal suspect is a minor or blind, deaf or dumb, his legal representative or close relatives should attend the meeting. Moreover, the lawyers met and were not monitored. (2) The interview with the criminal suspect who was not detained at the end of the interview can be conducted at his residence, unit or law firm. Others should not attend the meeting, but if the criminal suspect is a minor or blind, deaf or dumb, his legal representative or close relatives should attend the meeting. Moreover, the lawyers met and were not monitored. (3) The interview with the criminal suspect in custody shall be conducted in the place of detention. (II) Documents Required for Meeting A lawyer who meets a criminal suspect in custody shall bring the following documents and documents: 1. A special certificate issued by the law firm to meet the criminal suspect; 2. The lawyer's own lawyer's practice certificate; 3. Power of attorney signed by the client; 4. If the case involves state secrets, it shall also hold the Decision on Permission to Meet the Criminal Suspect issued by the investigation organ; 5. If translators are required to attend the meeting together, they shall also hold a certificate that the investigation organ allows translators to attend the meeting. In the investigation stage, general criminal cases can be met without restriction, as long as they are on duty; 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. In our country, there are not only serious bribery cases, cases that seriously affect national security and terrorist activities. There is no special requirement for the number of meetings between lawyers and prisoners in China, but it can only be carried out with the permission of relevant departments. This is also to prevent illegal behavior between lawyers and prisoners.