Received: 25 March 2022
Accepted: 27 July 2022
First Online: 10 August 2022
: The study was approved by the institutional review board of the School of Journalism and Communication, Beijing Normal University in 2017. We confirm that all participants gave their informed consent to the study after being informed that the data were treated in a completely anonymous way. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.