About the Authors

Cheng Lulu

Roles Funding acquisition, Project administration, Supervision, Writing – review & editing

Affiliations School of Foreign Studies, China University of Petroleum (East China), Qingdao, China, Shanghai Center for Research in English Language Education, Shanghai International Studies University, Shanghai, China

Hong Xie

Roles Data curation, Formal analysis, Investigation, Methodology, Writing – original draft

laraxie888@gmail.com

‡ HX is worked as co-first author on this work.

Affiliation School of Foreign Studies, China University of Petroleum (East China), Qingdao, China

Peng Wang

Roles Conceptualization, Formal analysis, Investigation, Resources, Writing – original draft

Affiliation School of International Education, Guizhou Normal University, Guiyang, China

Ting Zhang

Roles Writing – review & editing

Affiliation College of Engineering, Beijing University, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.