According to the Regulations of People's Republic of China (PRC) on the Use of Police Equipment and Weapons,
Article 7 Under any of the following circumstances, the people's police may use batons, tear gas, high-pressure water guns and riot guns to drive away police uniforms:
Fighting in groups, beating, provoking troubles, insulting women or committing other hooliganism;
(2) Gathering people to disturb the order of public places such as stations, docks, civil aviation stations and sports fields;
(3) Illegal assembly, procession and demonstration;
(4) Forcibly crossing the cordon set by the people's police performing their duties;
(5) resisting or obstructing the people's police from performing their duties according to law by violent means;
(6) Attacking the people's police;
(seven) other acts endangering public security, social order and the personal safety of citizens, which need to be stopped on the spot;
(eight) other circumstances in which police equipment can be used as stipulated by laws and administrative regulations.