Funding for this research was provided by:
National Social Science Foundation - Youth Project (17CSH073)
Wuhan University Humanities and Social Sciences Academic Development Program for Young Scholars “Sociology of Happiness and Positive Education” (WHU2016019)
Text and Data Mining valid from 2018-06-09
Received: 1 December 2017
Accepted: 25 May 2018
First Online: 9 June 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: Ethical approval for the study was granted by Department of Sociology, Wuhan University, and the approved protocol was followed.
: Participants signed a written informed consent prior to the study.