About the Authors

Ping Wang

Roles Conceptualization, Funding acquisition, Methodology, Supervision, Validation, Writing – original draft, Writing – review & editing

pwang2160@163.com

Affiliation School of Economics, Southwestern University of Finance and Economics, Chengdu, China

Lijiao Liu

Roles Software, Visualization, Writing – original draft

Affiliation School of Economics, Southwestern University of Finance and Economics, Chengdu, China

Competing Interests

The authors have declared that no competing interests exist.