This work was supported by National Natural Science Foundation of China (61503128), Science and Technology Plan Project of Hunan Province (2016TP1020), Scientific Research Fund of Hunan Provincial Education Department (16C0226,17C0223,18A333), Hengyang guided science and technology projects and Application-oriented Special Disciplines (Hengkefa [2018]60-31), Double First-Class University Project of Hunan Province (Xiangjiaotong [2018]469), Hunan Province Special Funds of Central Government for Guiding Local Science and Technology Development (2018CT5001) and Subject Group Construction Project of Hengyang Normal University (18XKQ02). We would like to thank NVIDIA for the GPU donation.