According to the inquiry method, the local police station will conduct a census of foreigners with household registration every year or regularly, so as to accurately find and record the existing information when necessary. For example, if a major incident occurs in a certain place and foreigners need to be investigated, then this recorded information is useful. In short, every police station should do this survey.
When the police station calls to verify the residential information registered in the community, it must first determine the source of the telephone number. Under normal circumstances, the police station will use the office phone to verify the residents' situation, which is what we usually call the landline. If it is determined to be verified by the public security organ, it shall cooperate; But if it's a mobile phone number, you should be vigilant. It may be a fraudulent phone call. Usually, the police station sometimes checks the population information of the people in its jurisdiction, which is the normal work of the police station.