About the Authors
- Baohu Li
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Roles Writing – original draft, Writing – review & editing
Affiliation School of Languages and Literature, University of South China, Hengyang, China
- Guangwei Li
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Roles Resources, Supervision, Validation
* E-mail: hu0701002@126.com
Affiliation School of Languages and Literature, University of South China, Hengyang, China
Competing Interests
The authors have declared that no competing interests exist.