Jian Li Zhejiang Gongshang University   Xiasha Campus Xuezheng Str. 18 International Business School Hangzhou, Zhejiang 310018 China   jianli.research@outlook.com   https://sites.google.com/site/jianli507n841e/home           JEL Areas: L9 : Industry Studies: Transportation and Utilities: General O3 : Technological Change; Research and Development: General