1. School of Law, Zhejiang University of Finance and Economics, 18 Xueyuan Road, Hangzhou 310018, P. R. China
2. School of Finance and Coordinated Innovation, Center of Wealth Management and Quantitative Investment, Zhejiang University of Finance and Economics, 18 Xueyuan Road, Hangzhou 310018, P. R. China
3. School of Economics and Management, Tsinghua University, 43 Chengfu Road, Beijing 100084, P. R. China
4. School of Accounting, Zhejiang University of Finance and Economics, 18 Xueyuan Road, Hangzhou 310018, P. R. China
5. School of Information Engineering, Nanchang Hangkong University, 696 South Fenghe Road, Nanchang 330063, P. R. China
6. Research Center of Applied Finance, Dongbei University of Finance and Economics, 217 Jianshan Street, Dalian 116025, P. R. China
7. Yuanpei College, Peking University, 5 Yiheyuan Road, Beijing 100871, P. R. China