Mr. Zhiyong (Ben) Li has served as our chief financial officer since June 2019. Prior to joining us, Mr. Li served multiple positions in GDS Holdings Limited (Nasdaq: GDS) from 2007 to 2019, with the last position held as finance vice president from 2014 to 2019. Mr. Li worked as an associate in PricewaterhouseCoopers Zhong Tian LLP, Beijing Branch from 2005 to 2007. Mr. Li received his bachelor's degree in national economic management from Renmin University of China in 2005.
Mr. Liang Zhao joined our company since April 2015 and has served as our chief risk officer since October 2017. Prior to joining us, Mr. Zhao was an entrepreneur and founded a business providing pet related services from 2011 to 2015. Mr. Zhao worked as a manager in Phoenix New Media Ltd. (NYSE: FENG) from 2004 to 2009. Mr. Zhao received his bachelor's degree in law from China University of Political Science and Law in 2004.
Mr. Junchen Sun has served as our vice president of finance since February 2017. Prior to joining us, Mr. Sun served as finance controller in MicroMedia Holdings Limited from 2015 to 2017. Mr. Sun worked as a senior associate in PricewaterhouseCoopers Zhong Tian LLP, Tianjin Branch, Tianjin from 2011 to 2015. Mr. Sun received his bachelor's degree in accounting from Tianjin University of Finance and Economics in 2011 and master's degree in business administration from Peking University in 2018.