Prosecutors have also paid more attention to crimes related to offering bribes and accused 37,277 people of "hunting officials"－a term used to describe those who try to bribe officials. The number is up by 87 percent, Cao said.

Corruption at lower levels also has been resolutely targeted, as 62,715 corrupt grassroots officials were charged in the past five years, such as those in charge of local agriculture, housing demolitions, social welfare and poverty alleviation, he said.

"It's not an easy task, and I believe the campaign faced resistance in the beginning, but it carried on and has achieved impressive results," said Yang Fan, an NPC deputy from Chongqing.

Cao said authorities this year will continue working hard, and with supervision commissions at all levels, to carry on with anti-graft work.

China is witnessing a fundamental change in the anti-corruption system as the NPC will review the country's first law on supervision starting on Tuesday. It will give a legal footing to supervisory commissions and detail how the commissions work, as well as their duties and obligations.

The law will bring all public officers, including civil servants and those working for public schools and medical institutes, under supervision, which means the fight against corruption will cover every public corner, said Ma Huaide, vice-president of China University of Political Science and Law.