Sun Xianfeng  is a Supervisor and the General Manager of Audit Department of the Company, and the Director of the Audit Department and the Audit Services Centre of CNPC.

Mr Sun is a senior economist and holds a college degree. He has over 35 years of working experience in China's oil and gas industry. Mr Sun worked as Deputy Director of the Supervisory Bureau of China National Petroleum Corporation from November 1996, before being transferred to the Eighth Office of the State Council Compliance Inspectors' General Office (Supervisory Committee of Central Enterprises Working Commission) as its temporary person-in-charge in June 1998. He has been the Deputy Director of the Audit Department of CNPC from October 2000, and as the Director of the Audit Services Centre since December 2000. He has been the Director of the Auditing Department of CNPC and the Director of the Auditing Services Centre since April 2004. He has been a Supervisor of the Company since May 2004. Since October, Mr Sun was appointed as a concurrent State-owned Company Supervisor from State-owned Assets Supervision and Administration Commission to CNPC. He became the General Manager of Audit Department of the Company since July 2007.