1.Yun XU(许云) Associate Professor and Discipline Leader in Finance, Department of Finance and Accounting, Shandong Foreign Trade Vocational College. Ph.D. in Finance, Shandong University, China, 2015 ShanDong Foreign Trade Vocational college, No. 201, Jufeng Road, Licang District, Qingdao City, Shandong Province, China, 266100.