As the entrusted party, it is obliged to investigate and collect evidence, but the investigation and collection of evidence is based on different situations, and lawyers have this right. However, few people cooperate in reality, especially in criminal cases. Therefore, discuss with lawyers how to better benefit the case and how to better reduce the sentencing of criminal suspects, and collect evidence from the municipal public security organs. Lawyers can only assist them, and obtaining evidence is not the best way. Please trust your lawyer.