Chairman of the Board of Directors and Chief Executive Officer
Yi Wang is one of our founders, and has served as the chairman of our board of directors and our chief executive officer since the inception of our company. Prior to that, Dr. Wang served as a product director at AdChina, a leading online advertising platform in China, from April 2011 to August 2012. From July 2009 to April 2011, he served as a product manager at Google and was responsible for various key features and systems of Google Analytics and Google's cloud infrastructure. He received his bachelor's degree and master's degree in electrical engineering from Tsinghua University in 2003 and 2005, respectively, and his Ph.D. degree in computer science from Princeton University in 2009.
Director and Chief Technology Officer
Zheren Hu is one of our founders, and has served as our director and chief technology officer since the inception of our company. He has also been in charge of our English for Adults business since April 2018. From 2010 to 2011, Mr. Hu served as an engineer at Quantcast, an AI-driven data analytics company. Mr. Hu received his bachelor's degree of engineering in computer science from Shanghai Jiao Tong University in 2006 and his master's degree of science in management information systems from the University of Arizona in 2008.
Director and Chief Scientist
Hui Lin is one of our founders, and has served as our director and chief scientist since the inception of our company. Prior to that, Dr. Lin served as a research scientist at Google from 2012 to 2013. Dr. Lin received his bachelor's degree and master's degree in electrical engineering from Tsinghua University in 2003 and in 2006, respectively, and his Ph.D. degree in electrical engineering from the University of Washington in 2011.
Chief Financial Officer
Bing Sun has more than 20 years of experience in finance and accounting along with significant experience as chief financial officer at both public and private China-based companies. He most recently served as chief financial officer and deputy general manager at Wanxiang A123 Systems Co., Ltd. His prior experience includes chief financial officer position at Daqo New Energy (NYSE: DQ) and Jiangsu Shunda Holdings Co., Ltd. In the early stage of his career, he also served as a controller at BCD Semiconductor, as an internal audit manager at The Brinks Company, and as an audit manager at Deloitte Touche Tohmatsu Limited. Mr. Sun is an MBA and a certified public accountant in the U.S.