Funding for this research was provided by:
Scientific Research Foundation of Fujian University of Technology (GY-Z18182, GY-Z14072)
Department of Education, Fujian Province (JAT170372, JT180352)
Article History
Received: 31 March 2019
Revised: 27 May 2020
Accepted: 14 June 2020
First Online: 24 June 2020