Acknowledgements. This work is supported by the National Natural Science Foundation of China (Nos. 61503128, 61772179), Hunan Provincial Natural Science Foundation of China (Nos. 2020JJ4152, 2019JJ40005), the Science and Technology Plan Project of Hunan Province (No. 2016TP1020), the General Scientific Research Fund of Hunan Provincial Education Department (Nos. 17C0223, 18A333), the Double First-Class University Project of Hunan Province (No. Xiangjiaotong [2018] 469), Postgraduate Research and Innovation Projects of Hunan Province (No. Xiangjiaotong [2019] 248–998), and Hengyang guided science and technology projects and Application-oriented Special Disciplines (No. Hengkefa [2018] 60-31).