The authors acknowledge the support received from the National Natural Science Foundation of China (Grant Nos. 21573066 and 21825201), the Provincial Natural Science Foundation of Hunan (Grant Nos. 2016JJ1006 and 2016TP1009), the Shenzhen Discovery Foundation (JCYJ20170306141659388), and the Hunan Provincial Innovation Foundation for Postgraduate (Grant No. CX2018B182).