Chinese President Xi Jinping has vowed to maintain his high pressure campaign to root out corruption, warning that the fight is vital for the CPC's integrity in the long term.

During an address to the third plenary session of the CPC Central Commission for Discipline Inspection, also known as the CCDI, Xi stressed zero tolerance of graft and promised to seriously punish every corrupt official found guilty, adding that senior officials should strictly adhere to party discipline.

He said in 2013, the party leadership had struck hard on corruption and made major progress.

According to the CCDI, discipline inspection agencies punished about 182,000 officials nationwide in 2013. Thirty-one high-profile officials were investigated by the CCDI itself and eight of them were handed over to prosecutors.