On "the five enhancements" in the action of the striking blows at the underworld force for the public security bureau;

Besides the external causes such as family,society,historical progress,an important cause that the "underworld forces" have been growing stronger is that they have the common twisted humanity such as bullying the weak,greed,and peacockery.

What the special struggle against Mafia_evil force in one northern city in Hunan has shown and a large number of cases exposed by media have reflected the process of the birth,growth and spread of crime of Mafia_evil force in China from the end of 1970 s to this early century.