This research is mainly financially supported by the research grant of Early Career Scheme (ECS 809813 ) from the Research Grant Council, Hong Kong SAR Government . This work was supported from our collaborators by National Natural Science Funds for Distinguished Young Scholars (Grant 21425728 ), National Basic Research Program of China (973 Program) (Grant 2013CB632402 ), National Science Foundation of China (Grants 21177048 , and 51472100 ), National Natural Science Foundation of China ( 51572101 ), Key Project of Natural Science Foundation of Hubei Province (Grant 2013CFA114 ), Self-Determined Research Funds of CCNU from the Colleges’ Basic Research and Operation of MOE (Grant CCNU14Z01001 ), and Excellent Doctorial Dissertation Cultivation Grant from Central China Normal University (Grant 2013YBYB56 ). We also thank the National Supercomputer Center in Jinan for providing high-performance computation.