Mr. Jun Zhang is one of our four co-founders and has been serving as our director since September 2011 and our advisor since March 2020. Mr. Zhang was our chairman of our board of directors from December 2016 to March 2020, co-chief executive officer from September 2018 to March 2020 and chief executive officer from January 2011 to September 2018. Mr. Zhang served as the operation manager at Wicresoft, a provider of “Internet +” transition service jointly founded by Microsoft Corporation and Shanghai Alliance Investment Limited, from October 2008 to July 2010. Prior to that, Mr. Zhang served as a technical lead of Microsoft Global Technical Engineering Center since 2001. Prior to that, Mr. Zhang worked at Shanghai Online E-Biz Co., Ltd. as a coder and programmer from 2000 to 2001. Mr. Zhang received his bachelor’s degree in communication science and engineering and master’s degree in industrial engineering from Shanghai Jiaotong University in China.