Police in Mizhi County, Shanxi Province, are required to report to superiors if they want to hold a banquet, reports Xi'an Evening News.

To strengthen discipline among police, the county public security bureau issued "five don'ts" recently - among them are not more than 150 guests can be invited for an occasion; and police cars are banned from being parked in front of restaurants or entertainment places.

Those who disobey will be punished.