Anti-fraud center of the Fengtai Branch of the Beijing Municipal Public Security Bureau can be said to have done their best. They "transformed" into operators, repeatedly dialed dissuasive calls, broke up and crumbled to explain the fraud methods.
They go undercover to scam groups, understand the latest routines, figure out the psychology of victims, and update dissuasive techniques. From telephone dissuasion to door-to-door dissuasion; From persuading the subject, to contacting the subject's family to "persuade acquaintances"; From the dissuasion officer making a phone call, to uniting the police station, the community, and the school together.