BEIJING - If we think of China as a healthy body, then Liu Jiayi would be in charge of the immune system.

The auditor-general of the National Audit Office (NAO) described China's auditing system as the country's "immune system", which helps check and stem irregularities - before, during and after they occur.

The system can safeguard the healthy operation of the economy and society, optimize the institutional and legal framework and solve problems by disclosing and punishing irregularities, he said.