Member of the National Committee of CPPCC and Member of Subcommittee of Economy, CPPCC; Chief Economist of China Academy of New Supply-side Economics; Ph.D. Advisor and Research Fellow in Chinese Academy of Fiscal Sciences; Advisor of China Public-Finance Academy; Chairman of the Public-Private Partnerships Research Committee of China Public-Finance Academy; Member of Public-Private Partnerships Expert Committee of National Development and Reform Committee; Consulting Advisor of the People’s Government of several municipalities including Beijing; Guest Professor of several universities such as Peking University; Expert enjoying special state allowance in 1995; appraised as an academic leader at high level for the National Project “Tens of Thousands of Talents” in 1997. Attended economic symposiums respectively at the invitations of Zhu Rongji, Wen Jiabao, Hu Jintao and Li Keqiang (thus considered as one of the “Advisors for Decision-making by the Central Authorities” by the media). According to statistical analysis of the big data of more than 7 million articles in 6268 academic journals of philosophy and social sciences published in China Social Science Assessment from 2006 to 2015. Mr. Jia Kang's publications (398 articles), total citations (4231 times) and the total download frequency (204,115 times) ranked first. As the representative scholar among the core authors of economics, Mr. Jia Kang's comprehensive index of 3429 is far ahead.