Funding for this research was provided by:
Archives branch project of Chinese Society of Higher Education (ZGD-YB-2020-45)
Article History
Accepted: 14 July 2022
First Online: 19 August 2022
Declarations
:
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The authors declare that they have no conflict of interests.