Funding for this research was provided by:
International Training Project for Outstanding Young Scientific Research Talents in Guangdong Universities in 2018 at South China Normal University
Natural Science Foundation of Guangdong Province (2016A030313426)
General Program of the Natural Science Foundation of Guangdong Province of China (2020A1515010445)
Article History
Received: 22 June 2020
Accepted: 14 October 2020
First Online: 23 October 2020
Competing interests
: The authors declare that they have no competing interests.