Introduction to the "Relics and Crime Exhibition of the Harbin Police Department of the Puppet Manchukuo": The "Relics and Crime Exhibition of the Harbin Police Department of the Puppet Manchukuo" displays the influence of the Harbin Police Department of the Puppet Manchukuo on the Harbin area in terms of politics, economy, ideology and culture. The brutal rule of the people was to expose the colonial crimes of the Japanese aggressors who brutally suppressed the people of Northeast China politically, plundered wealth by any means at all economically, and carried out autocratic rule ideologically and culturally.