A senior party official Sunday said China will regularize campaigns to crack down "relentlessly" on crimes as an attempt to serve the notion of "constructing a harmonious socialist society", recently endorsed by the central authorities as a new guideline for social and economic development.

Luo Gan, a member of the Standing Committee of the Political Bureau of the Communist Party of China (CPC) Central Committee andchairman of the Central Committee for Comprehensive Management of Public Security, made the remarks at a panel discussion in the third annual session of the Tenth National People's Congress (NPC) in Beijing Saturday morning.

While addressing lawmakers from east China's Fujian Province, he highlighted the importance of the recently launched notion and said pursuit of harmony should be made in a "stable social environment".

"Harmony will not exist in the absence of stability," said the official, drawing legislators' attention to new security requirements of a "harmonious society".

He urged relevant government departments at various levels to handle conflicts among the people properly and balance interests of varied social groups to root out conflicts and problems at an early stage.

Social security remains a protruding problem affecting social harmony and stability. Party and government officials should work harder to build up a sound public security management network and work out new methods to combat crimes.

"We should launch campaigns to crack down on crimes on a regular basis and take high-handed measures in this regard," said Luo, also vowing to promote social justice by fixing flaws in the judicial system.