Funding for this research was provided by:
NNSF of China (11571123)
Guangdong Province Ordinary University Characteristic Innovation Project (2017KTSCX020)
National Research Foundation of the Korean government (2017R1D1A1B03028642)
Article History
Received: 6 May 2019
Revised: 5 September 2019
First Online: 20 September 2019