Why don't public security organs let lawyers meet with criminal suspects?

According to> and>, after the first interrogation by the investigation organ or the day when compulsory measures are taken against the criminal suspect, the criminal suspect may hire a lawyer to provide legal advice; Acting as an agent for complaints and accusations. If the suspect is arrested, poor lawyers can apply for bail pending trial. According to you, the conditions stipulated by law have been met, and it is not valid for them to use the excuse of not completing the reconnaissance.