Funding for this research was provided by:
National Basic Research Program of China (973 Program) (2019YFD0300100)
Direktoratet for internasjonalisering og kvalitetsutvikling i høgare utdanning (5802)
Received: 8 May 2021
Accepted: 14 July 2021
First Online: 23 August 2021
: Not applicable.
: The authors consent for publication.
: The authors declare that the research has no competing interests.