“…To obtain sufficient and suitable data, this study developed an online questionnaire for data collection. Previous studies have found that mental health is influenced by participants’ gender ( Zhang and Yu, 2004 ; Feng and Zhang, 2005 ; He, 2014 ), age ( Zhang et al, 2011 ), physical health status ( Dong et al, 2012 ; Lu and Wang, 2015 ), family economic status ( Hudson, 2005 ; Hu et al, 2014 ), and physical activity ( Swann et al, 2018 ; Zheng et al, 2020 ). To eliminate the interference of these variables, this study included these variables as control variables.…”