Guo, Xingru
Liu, Aijun
Li, Xia
Xiao, Yaxuan
Funding for this research was provided by:
Natural Science Foundation of Shaanxi Province (2017JM7004)
Fundamental Research Funds for the Central Universities (JB190606)
Major Theoretical and Practical Research Projects of Social Science in Shaanxi province (2019C068)
Article History
Received: 11 October 2019
Revised: 24 February 2020
Accepted: 10 April 2020
First Online: 18 August 2020
Compliance with Ethical Standards
:
: The authors declare no conflict of interest.