simplify some code
simplify some code

Traksewt/pv,yuhangwang/pv,biasmv/pv,Traksewt/pv,CyrusBiotechnology/pv,yuhangwang/pv,Traksewt/pv,CyrusBiotechnology/pv,biasmv/pv,Traksewt/pv,biasmv/pv,biasmv/pv,yuhangwang/pv,yuhangwang/pv,CyrusBiotechnology/pv,CyrusBiotechnology/pv