BEIJING - Wang Qishan, chief of the discipline watchdog of the Communist Party of China (CPC), has called for establishing authoritative and highly-efficient supervisory systems covering all public officials.

Wang, head of the CPC Central Commission for Discipline Inspection, made the remarks during an inspection tour in Beijing, Shanxi Province and Zhejiang Province -- the three areas piloting the nation's supervisory system reform centering on new supervision committees.

The supervisory system reform will strengthen the CPC's leadership over anti-corruption work, coordinate various anti-corruption authorities and establish supervision committees to work with current discipline inspection commissions, "realizing full-coverage over all employees with public power," Wang said.

The reform is aimed at improving the self-supervision of the Party and the government, and enhancing the Party's abilities for "self-purification," he said.

The supervision committees are anti-graft agencies by their nature, Wang said. They will perform supervision, investigation and implementation duties, engaging with judicial and law enforcement authorities, and restricting each other, he added.

He asked Party authorities of the three pilot areas to implement the reform according to local situations, and to provide practical experience for a national roll-out.