1. School of Finance, Zhejiang University of Finance & Economics, Hangzhou, Zhejiang, China
2. Financial Innovation and Inclusive Finance Research Center, Zhejiang University of Finance and Economics, Hangzhou, Zhejiang, China
3. School of Mathematics and Physics, Xi’an Jiaotong-Liverpool University (XJTLU), Suzhou, China
4. Department of Physics, Zhejiang University, Hangzhou, China