SHANGHAI - The government of Nanjing, Jiangsu province, has toughened its disciplinary rules for chengguan, or urban management officers, after one of them was fired for drunk driving.

The new initiatives, released on Sunday, tighten bans on the use of excessive force, violations of procedures, extortion and drinking on duty.

Uniformed chengguan will not be allowed to engage in non-work-related activities. They have been specifically warned against wearing their uniforms while visiting entertainment and recreation venues, including restaurants, karaoke bars or shopping malls.