This work was supported by the National Key Technology Research and Development Program (no. 2013BAH18F02 ), Research funds from Ministry of Education and China Mobile ( MCM20130601 ), Research Funds of CCNU from the Colleges׳ Basic Research and Operation of MOE ( CCNU13B001 ), Research funds from the Humanities and Social Sciences Foundation of the Ministry of Education (no. 14YJAZH005 ), Central China Normal University Research Start-up funding (no. 120005030223 ), The Scientific Research Foundation for the Returned Overseas Chinese Scholars (no. (2013)693 ), Research Funds of CCNU from the Colleges׳ Basic Research and Operation of MOE (no. CCNU14A05020 , no. CCNU14A05019 ), National Natural Science Foundation of China (no. 61272206 ), National Key Technology Research and Development Program (no. 2014BAH22F01 ).