BEIJING, Nov. 27 (Xinhua) -- A senior official of the Communist Party of China (CPC) on Wednesday required efforts to put in place long-term mechanisms of combatting and punishing pornography, gambling, drug abuse and gang violence.

Guo Shengkun, a member of the Political Bureau of the CPC Central Committee and head of the Commission for Political and Legal Affairs of the CPC Central Committee, made the remarks at a symposium.

The symposium, held by the Commission for Political and Legal Affairs as per the CPC Central Committee plans on the Party's education campaign themed "staying true to our founding mission," summed up work of fighting and punishing practices of turning a blind eye to, harboring or even acting as "protective umbrellas" of the aforementioned illegal and criminal activities.

Guo urged officials to carry out self-reform and remain dedicated to serving the people in their work, to focus on addressing issues the people are strongly concerned about and to achieve actual outcomes in breaking up "umbrellas" and "networks."

He underscored targeting key regions, industries and areas prone to such illegal activities and keeping a close eye on major gang criminal cases, "protective umbrellas" and "connections," and the economic foundation of criminal gangs.