code refactor
code refactor

shaunstanislaus/star,firelife/star,amandus1990/star,zhoulingjun/star,nkafei/star,allengaller/star,singleton7/star,skymoons/star,hustcer/star,Suninus/star-1,xdcesc/star,7630155/star,dyhpoon/star,YuepengGuo/star,JackyTao/star