Law enforcement in the People's Republic of China is the responsibility of public security agencies, including the People’s Police and People’s Armed Police in mainland China. Hong Kong and Macau have separate law enforcement agencies, different legal systems, and are classified as separate jurisdictions under the one country, two systems framework. However, the Hong Kong Police Force (HKPF) and Public Security Police Force in Macau often cooperate with the mainland MPS on cases involving cross border crime.