Will the public security bureau call the recipient before sending the letter?

Writing letters may be just to ask for your advice, not to force you to try, and at present, you basically don't write letters, just send text messages or make phone calls.

The dispatched branch does not refer to the dispatched office of the public security organ. Because the police station has the closest relationship with people's life, people are often referred to as the abbreviation of police station. The police station is the grass-roots organization of the public security system and the agency of the higher public security organs. In China, according to the national public security management regulations and the authority stipulated by the public security organs at higher levels, police stations mainly have the following tasks: resolutely implement the line, principles and policies of public security work; Combating criminals; Prevent and control all kinds of accidents, manage social order and maintain public order; Protect the legitimate rights and interests of the people from infringement and safeguard national security.