About the Authors

Qin Liu

Roles Conceptualization, Data curation, Formal analysis, Methodology, Software, Validation, Writing – original draft, Writing – review & editing

demoqin@163.com

Affiliation Research Institute of Social Development, Southwestern University of Finance and Economics, Chengdu, China

Jiehua Lu

Roles Methodology, Supervision, Validation, Writing – review & editing

Affiliation Department of Sociology, Peking University, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.