Funding for this research was provided by:
national natural science foundation of china (72001222, 71871006)
the emerging interdisciplinary project of cufe
educational reform project of School of Economics and Management, Beihang University (430271)
disciplinary funding of Central University of Finance and Economics
program for innovation research in central university of finance and economics
Article History
Received: 23 June 2021
Accepted: 9 February 2022
First Online: 23 February 2022
Declarations
:
: The authors declare that they have no competing interests.