Hao, Yuanyuan http://orcid.org/0000-0002-4990-4380
Kong, Mengyuan
Article History
Received: 17 February 2022
Accepted: 29 June 2022
First Online: 13 July 2022
Competing interests
: The authors declare no competing interests.
: This research was not required to receive any ethical approval because it did not involve human research participants and no primary data were collected. It uses data collected by statistical organizations such as the Korea Sports Industry Report, Statistics Korea and the World Bank.
: This article does not contain any studies with human participants performed by any of the author(s).