Song Xiayun: Male, born in June, 1969, China nationality, without permanent residency abroad, party member, CPC, Ph.D. in accounting from Shanghai University of Finance and Economics, postdoctoral fellow in business administration from Nanjing University, accounting professor and doctoral supervisor from Zhejiang University of Finance and Economics. 1991Worked in School of Economics and Management of Nanchang University from July to June 2007; From February to 20, 200713, he worked in the Business School of Ningbo University as the deputy director of the Institute of Modern Accounting. From September 20 13 to present, I worked in the Accounting College of Zhejiang University of Finance and Economics. He used to be the director of the Audit Department, and now he is the director of the Audit and Internal Control Research Center. 20 19 May to present, he has been an independent director of the company. He is currently an independent director of Henan Mingtai Aluminum Co., Ltd., Zhejiang Guangxin Pharmaceutical Co., Ltd. and Ningbo Jintian Copper (Group) Co., Ltd., a director of the Audit Education Branch of China Audit Society and a senior member of China Accounting Society.