Funding for this research was provided by:
National Natural Science Foundation of China (61632011, 61772156, 61702137)
CCF-Tencent Open Fund (CCF-TencentIAGR20160109)
HIT-Tencent (AGR201601)
2015 Guangdong Provincial Key Platform Project-the Youth Innovative Talent Funding
Article History
Received: 17 May 2017
Revised: 21 December 2017
Accepted: 16 June 2018
First Online: 26 September 2018