Conceptualization, M.L. and J.W.; methodology, M.L., J.W., Q.F. and B.F.; formal analysis, M.L. and B.F.; writing–original draft preparation, M.L. and B.F.; writing–review and editing, M.L., J.W. and Q.F.; project administration, J.W.; funding acquisition, J.W., Q.F. and B.F. This work was supported in part by the National Natural Science Foundation of China under Grants 61772179, 61672536, 61872450, 61420106009, and 61503128, in part by Hunan Provincial Natural Science Foundation of China under Grant 2019JJ40005, in part by the Scientific Research Fund of Hunan Provincial Education Department under Grant 17C0222, in part by Application-oriented Special Disciplines, Double First-Class University Project of Hunan Province(Xiangjiaotong [2018] 469), and in part by the Science and Technology Plan Project of Hunan Province under Grant 2016TP1020.