Why did Lu 'an police leave a return visit message?

Automatically enter the police system. After calling the police, the police will make a record of the return visit, the main purpose of which is to inquire about the situation and then confirm this matter, so that when you go back according to the situation, you can file a case to prevent someone from lying about the case, and the return visit information will be automatically entered into the police system, so that the police in Lu' an will have the return visit information. "Police" refers to the state and its rulers, according to the will of the state and the ruling class and the established standards of the police organs and their policemen.