Mr. Shaofeng Gu is one of our four co-founders and has been serving as our director since April 2009 and strategy adviser since December 2016. Mr. Gu served as our chief strategy officer from August 2014 to December 2016, chief technology officer from January 2011 to August 2014 and chief executive officer from 2007 to 2011. Prior to founding Paipaidai, Mr. Gu was the founder and the chief executive officer of Shanghai Jufei Internet Technology Co., Ltd. (Podlook), a startup running podcast aggregation business, from 2005 to 2007. Prior to founding Podlook, Mr. Gu served as a technical lead of Microsoft Corporation from 2000 to 2005. Mr. Gu received his bachelor's degree in communication science and engineering from Shanghai Jiaotong University in China.