The Public Security Bureau (PSB) is a government agency in the People's Republic of China responsible for maintaining public order and safety. It oversees various law enforcement activities, including crime prevention, traffic management, and immigration control. The PSB operates at multiple levels, from local to national, ensuring that laws and regulations are enforced effectively. In addition to traditional policing, the PSB also handles issues related to social stability and public security. It plays a crucial role in managing emergencies and coordinating responses to incidents, such as natural disasters or public health crises, to protect citizens and maintain order in society.