明修栈道,暗渡陈仓

词典解释

[pretend to prepare to advance along one path while secretly going along another;do one thing under cover of another] 指刘邦听从张良计谋,在往南郑途中将所经栈道焚毁,表示不再回关中,以消除项羽疑心;尔后绕道出兵,在陈仓击破章邯军,复归咸阳之事。后以此比喻从正面迷惑对方,暗地进行突然袭击

此是哥明修栈道,暗渡陈仓的计策。——《jin*瓶*梅词话》