We gratefully acknowledge the financial support from the Hunan Education Department of Foundation of China (Nos. 18C0172), the National Natural Science Foundation of China (Nos. 71771082 , Nos. 71371067 , Nos. 71431008 ), the National Social Science Foundation of China (Nos. 17CJY040 ), Hunan Provincial Natural Science Foundation of China (Nos. 2017JJ1012 ) and China futures Association Joint Research Program Subsidies.