About the Authors
- Yu Zhang
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Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Resources, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing
Affiliation School of Foreign Studies, China University of Petroleum (East China), Qingdao, Shandong, China
- Yuanyuan Liu
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Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Resources, Supervision, Validation, Writing – original draft, Writing – review & editing
Affiliation School of Foreign Studies, China University of Petroleum (East China), Qingdao, Shandong, China
- Haoran Mao
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Roles Investigation, Methodology, Resources, Validation, Writing – review & editing, Formal analysis, Conceptualization
* E-mail: mao@upc.edu.cn
Affiliation School of Foreign Studies, China University of Petroleum (East China), Qingdao, Shandong, China
- Junxiang Zhao
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Roles Conceptualization, Formal analysis, Investigation, Methodology, Resources, Validation, Writing – original draft
Affiliation Department of Social and Ecological Civilization Studies, Shandong Administration Institute, Jinan, Shandong, China
Competing Interests
The authors have declared that no competing interests exist.