add time > 0
add time > 0

LijieSong/JLWeChat-iPhone,jimneylee/JLWeChat-iPhone,jimneylee/JLWeChat-iPhone,jimneylee/JLWeChat-iPhone,pjyin/JLWeChat-iPhone,pjyin/JLWeChat-iPhone,jimneylee/JLWeChat-iPhone,LijieSong/JLWeChat-iPhone