A police car is seen during a night patrol mission in Changchun, northeast China's Jilin Province, Jan. 6, 2021. The public security bureau of Changchun has carried out night patrol tasks since 2011. More than 500 police officers and over 130 police cars patrol the streets every night, performing the functions of emergency response, public security management, dispute mediation, rescue services and so on. China will mark its first national police day on Jan. 10 this year. (Xinhua/Xu Chang)

Photo taken on Jan. 6, 2021 shows police cars ready for a night patrol mission in Changchun, northeast China's Jilin Province. The public security bureau of Changchun has carried out night patrol tasks since 2011. More than 500 police officers and over 130 police cars patrol the streets every night, performing the functions of emergency response, public security management, dispute mediation, rescue services and so on. China will mark its first national police day on Jan. 10 this year. (Xinhua/Xu Chang)

Two police officers and an assistant police patrol a street in Changchun, northeast China's Jilin Province, Jan. 6, 2021. The public security bureau of Changchun has carried out night patrol tasks since 2011. More than 500 police officers and over 130 police cars patrol the streets every night, performing the functions of emergency response, public security management, dispute mediation, rescue services and so on. China will mark its first national police day on Jan. 10 this year. (Xinhua/Xu Chang)

A policeman walks to the vehicle to patrol at night in Changchun, northeast China's Jilin Province, Jan. 6, 2021. The public security bureau of Changchun has carried out night patrol tasks since 2011. More than 500 police officers and over 130 police cars patrol the streets every night, performing the functions of emergency response, public security management, dispute mediation, rescue services and so on. China will mark its first national police day on Jan. 10 this year. (Xinhua/Xu Chang)

Policeman Bai Xinyu works during a patrol mission at night in Changchun, northeast China's Jilin Province, Jan. 6, 2021. The public security bureau of Changchun has carried out night patrol tasks since 2011. More than 500 police officers and over 130 police cars patrol the streets every night, performing the functions of emergency response, public security management, dispute mediation, rescue services and so on. China will mark its first national police day on Jan. 10 this year. (Xinhua/Xu Chang)

Policeman Wang Guanghui arranges equipment before a night patrol mission in Changchun, northeast China's Jilin Province, Jan. 6, 2021. The public security bureau of Changchun has carried out night patrol tasks since 2011. More than 500 police officers and over 130 police cars patrol the streets every night, performing the functions of emergency response, public security management, dispute mediation, rescue services and so on. China will mark its first national police day on Jan. 10 this year. (Xinhua/Xu Chang)