Wang, Li http://orcid.org/0000-0003-1540-7826
Wang, Zhizhong
Funding for this research was provided by:
Program for the Philosophy and Social Sciences Research of Higher Learning Institutions of Shanxi (201803066)
Ministry of education of Humanities and Social Science project (18YJC630189)
Education Scientific Planning Foundation project of Shanxi of China (GH-17022)
Chongqing social science planning project (2017YBGL133)
Article History
Received: 17 April 2019
Accepted: 24 June 2020
First Online: 1 August 2020
Ethics approval and consent to participate
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: The authors declare that they have no competing interests.