Born in 1974, Ms. Mu is a professor-level senior accountant and holds a master’s degree. Ms. Mu previously served as the Chief Accountant of China Petroleum Engineering Corp., Ltd., and a member of the Coordination Committee of Support and Services Business Group of China National Petroleum Corporation. From May 2022 to October 2024, Ms. Mu served as the General Manager of the Finance Department of PetroChina, and concurrently served as the Vice Chairwoman of CNPC Exploration and Development Company Limited, Chief Financial Officer of CNPC Taihu Lake Investment (Beijing) Company Limited, etc. during the period. Ms. Mu served as the Chief Accountant of CNOOC Group from October 2024. Ms. Mu served as a Director of OOGC and CNOOC (BVI) from October 2024. Ms. Mu was appointed as a Non-Executive Director and a member of the Audit Committee of the Company with effect from November 2024, and she was appointed as the Chief Financial Officer of the Company in January 2025, and was re-designated from the Non-executive Director to the Executive Director, and ceased to serve as a member of the Audit Committee of the Company.