A total of 14 national political advisors were expelled due to corruption, said Yu Zhengsheng, China's top political advisor Tuesday.

They include two vice chairmen of the CPPCC National Committee, Ling Jihua and Su Rong, who have been suspected of corruption.

Su is now being investigated by the Supreme People's Procuratorate over allegations of accepting huge bribes for promoting his inferiors, among others.

Ling has been under investigation for "suspected serious disciplinary violation" by the Communist Party of China (CPC) Central Commission for Discipline Inspection at least since last December.

A CPPCC meeting last month removed Ling from the post of National Committee vice chairman and stripped him of his CPPCC membership.

"This has been a warning for us to improve the integrity of our members and continue fighting corruption," Yu said.

At a press conference on Monday, Lyu Xinhua, spokesman for this year's CPPCC National Committee, said that the cases have affected the image of the CPPCC, though most of their violations did not occur during their tenure as leading national political advisors.

He vowed that the national political advisory body is no harbor for corrupt officials.