YAU Ka Chi, born in 1958, holds a professional diploma in company secretaryship and administration from the Hong Kong Polytechnic (now known as the Hong Kong Polytechnic University) and is a member of the American Institute of Certified Public Accountants, Illinois CPA Society and the Hong Kong Institute of Certified Public Accountants. Mr. YAU has over 30 years of professional accounting services experience including 20 years in serving PRC-based enterprises. He had worked for Ernst & Young in its Hong Kong, Toronto and Beijing offices, with a primary focus in providing professional services in accounting and audit, initial public offering, and corporate restructuring, before retiring in September 2015. During the tenure with Ernst & Young, Mr. YAU was appointed, among others, as the professional practice director of Greater China and the assurance leader for China North Region. He joined the Group in 2016.

Mr. YAU previously served as an independent non-executive director of China Mengniu Dairy Company Limited, BetterLife Holding Limited, Yihai International Holding Ltd. and HBM Holdings Limited, respectively, until November 2021, October 2023, March 2024 and June 2024. The above companies are listed on the Hong Kong Stock Exchange.