Published on in Vol 9 , No 4 (2021) :Oct-Dec
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/27036, first published
.

1 Department of Education Information Technology, Faculty of Education, East China Normal University, Shanghai, CN
2 Research Faculty of Media and Communication, Hokkaido University, Sapporo, JP