Li, Yi
Mi, Zichuan
Jing, Wenjun
Funding for this research was provided by:
Transformation of Scientific and Technological Achievements Programs of Higher Education Institutions in Shanxi (2019SK077)
Humanities and Social Sciences Foundation of Ministry of Education (No.20YJA910004)
Shanxi "1331 Project" Key Innovative Research Team
Article History
Received: 15 August 2020
Accepted: 12 November 2020
First Online: 1 December 2020
Competing interests
: The authors declare no competing interests.