We usually refer to the 37 days in the examination stage of public security organs as "golden rescue time", because every time the case is pushed forward, the parties will be more dangerous, and it is impossible for the parties and their families to sit still and see if the public security organs will let people go first, so it is wrong to let people go first and then ask the lawyer. The reason why the public security organs arrest people is because they have mastered the unfavorable evidence of the parties' crimes, and the parties have now lost their personal freedom. The only person who can communicate effectively with the parties and the public security organs is generally an attorney, and family members generally don't know much about the law of criminal cases.
After a person is put into a detention center, his family should promptly entrust a lawyer to get in touch with the police handling the case of the public security organ, communicate the relevant case, and strive to meet the criminal suspect. If the circumstances are serious, it is recommended to entrust directly. If it is not too serious, you can entrust a lawyer to communicate with the police handling the case first, get a preliminary understanding of the situation, and decide whether to continue to entrust according to the situation.