Xu, Manhou
Du, Rong
Li, Xiaoli
Yang, Xiaohui
Zhang, Baogui
Yu, Xiuli
Funding for this research was provided by:
Higher School of Philosophy and Social Sciences Research Project of Shanxi Province (2019W134)
Soft Science Research Project of Shanxi Province (2018041072-1)
Qinghai Innovation Platform Construction Project (2017-ZJ-Y20)
Applied Basic Research Project of Shanxi Province (201701D221225)
Scientific and Technologial Innovation Programs of Higher Education Institutions in Shanxi (2020L0532)
Article History
Received: 4 January 2021
Accepted: 11 May 2021
First Online: 26 May 2021
Competing interests
: The authors declare no competing interests.