About the Authors

Li Ma

Roles Writing – original draft, Writing – review & editing

mali@cdu.edu.cn

Affiliation College of Teachers, Chengdu University, Chengdu, China

Ying Gu

Roles Writing – original draft

Affiliation Chengdu Jinxi Foreign Language Experimental Primary School, Chengdu, China

Competing Interests

Li Ma reports financial support was provided by Sichuan Provincial Office for Philosophy and Social Science Planning. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. This does not alter our adherence to PLOS ONE policies on sharing data and materials.