国家自然科学基金项目41401191;广东省自然科学基金项目2015A030313504;广东省教育厅青年创新人才项目2014KQNCX109;广州市哲学社会科学“十二五”规划项目15Q27;广州市属高校科研项目1201430923 [National Natural Science Foundation of China,No.41401191;The Guangdong Natural Science Foundation,No.2015A030313504;Young Innovation Talent Program in Guangdong,No.2014KQNCX109;Planning Program of Social Science in Guangzhou,No.15Q27;Science Research Program of Universities and Colleges in Guangzhou,No.1201430923]