Funding for this research was provided by:
National Natural Science Foundation of China (71901101, 72071133, 72071120, 72171048, 71771052)
Postdoctoral Research Foundation of China (2020M671134)
Fundamental Research Funds for the Central Universities (2662021JC002)
Research Project on Humanities and Social Sciences of Hebei Higher Education Institutions (BJ2019079)
Fundamental Research Funds for the Hebei Universities (SQK202002)
Natural Science Foundation of Hebei (G2019210226)
Scientific Research Planning Project of China State Railway Group (2020F026)
Article History
Received: 21 May 2022
Accepted: 18 August 2022
First Online: 7 September 2022
Declarations
:
: Not applicable.
: All authors listed agree to publish this work.
: The authors declare no competing interests.