Board of Directors

Mr. Yunfeng Bai
Chairman of Board of Directors
Mr. Yunfeng Bai has been our chairman since January 2020. He served as our president from October 2016 to December 2021. From April 2011 to October 2016, Mr. Bai was our senior vice president and led our Small Class business throughout China. Prior to this, Mr. Bai served as our vice president between June 2008 and April 2011, and in this capacity he oversaw our personalized premium services. Mr. Bai founded our high school division in 2005 and was the director of our Beijing operations from June 2006 to May 2008. Mr. Bai received his bachelor’s degree in engineering automation from Beijing University of Aeronautics and Astronautics in 2003. He attended the CEO course of Guanghua Management School at Peking University between 2008 and 2009 and graduated from the EMBA program of China Europe International Business School in 2012.
Mr. Bangxin Zhang
Director and Chief Executive Officer

Mr. Bangxin Zhang is one of our founders and has served as our chairman or director and chief executive officer since our inception. Mr. Zhang provides vision, overall management, and strategic decision-making relating to marketing, investment planning, and corporate development. Mr. Zhang received his bachelor's degree in Life Sciences from Sichuan University in 2001, was in the postgraduate program of the Life Science School of Peking University from 2002 to 2007, and received an EMBA degree from China Europe International Business School in 2009.

Jane Jie Sun
Audit Committee Chair, Independent Director

Jane Jie Sun has served as our independent director since October 2010. Ms. Sun has extensive experience in SEC reporting, finance and accounting. She has served as the chief operating officer of International, Ltd, or Ctrip, a NASDAQ-listed company, since May 2012, and as chief financial officer of Ctrip from December 2005 to April 2012. Prior to joining Ctrip, Ms. Sun served as the head of the SEC and External Reporting Division of Applied Materials, Inc., where she worked from 1997 to 2005. Prior to joining Applied Materials, Inc., Ms. Sun worked with KPMG LLP in Silicon Valley, California for five years. Ms. Sun is a member of the American Institute of Certified Public Accountants and a member of the State of California Certified Public Accountants. Ms. Sun received her bachelor’s degree from the Business School of the University of Florida with High Honors. She also attended the undergraduate program at Beijing University Law School from 1987 to 1989.

Dr. Weiru Chen
Compensation Committee Chair, Independent Director
Dr. Weiru Chen has served as our independent director since June 2015. Mr. Chen is associate professor of strategy at China Europe International Business School (“CEIBS”). Prior to joining CEIBS, he served as a faculty teaching strategy at INSEAD. Mr. Chen’s research is centered on firms’ technological search behaviors, strategic dynamics, and cross-border business model transfer. Mr. Chen received a Ph.D. in Management from Purdue University in 2003.
Dr. Kaifu Zhang
Nominating & Corporate Governance Committee Chair, Independent Director
Dr. Kaifu Zhang has served as our independent director since October 2016. Dr. Zhang is assistant professor of Marketing and the Xerox Junior Chair at the Tepper School of Business, Carnegie Mellon University (“CMU”). Prior to joining CMU, he was assistant professor at Cheung Kong Graduate Schools of Business in China. His research interests include the economics of multi-sided markets, business model design for online platforms, and the use of big data and machine learning in econometrics. He has consulted for and offered executive training at a number of tech firms in Europe, US and China. He holds a Ph.D. in Management from INSEAD (France) and a BE in Computer Science from Tsinghua University.
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