About the Authors

Siliang Guo

Roles Conceptualization, Supervision, Writing – original draft

gsl200601@126.com

Affiliation School of Economics and Management, Qilu Normal University, Jinan, China

Yanhua Diao

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

Affiliation School of Economics and Management, Shandong Youth University of Political Science, Jinan, China

Competing Interests

The authors have declared that no competing interests exist.