refactor code
refactor code

wmydz1/goim,huweixuan/goim,yunhappy/goim,cokeboL/goim,yunhappy/goim,vincentqiu/goim,swallowing0619/goim,qinlodestar/goim,thinkboy/goim,cainiaocome/goim,cainiaocome/goim,wmydz1/goim,cokeboL/goim,huweixuan/goim,cainiaocome/goim,yunhappy/goim,sinuos/goim,yh453926638/goim,cokeboL/goim,qinlodestar/goim,yunhappy/goim,wmydz1/goim,yh453926638/goim,yh453926638/goim,swallowing0619/goim,cainiaocome/goim,huweixuan/goim,Terry-Mao/goim,wmydz1/goim,huweixuan/goim,yh453926638/goim,Terry-Mao/goim,cokeboL/goim,vincentqiu/goim,swallowing0619/goim,swallowing0619/goim