School of Finance, Anhui University of Finance and Economics, Bengbu 233030, China;
School of Banking and Finance, University of Business and Economics, Beijing 100029, China;
School of Finance, Anhui University of Finance and Economics, Bengbu 233030, China;
School of Finance, Anhui University of Finance and Economics, Bengbu 233030, China;
MADIS, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190, China;