战国时期，小国被鱼肉，大国争霸权。在中原的"},{"lemmaId":0,"tag":"innerlink","text":"鬼谷"},{"tag":"text","text":"，有一个既知天时地理，又知兵法战阵的奇人，人称鬼谷子。鬼谷子手下有两个得意弟子，一个是"},{"lemmaId":0,"tag":"innerlink","text":"孙子"},{"tag":"text","text":"（"},{"lemmaId":0,"tag":"innerlink","text":"孙武"},{"tag":"text","text":"）的后世子孙--"},{"lemmaId":0,"tag":"innerlink","text":"孙膑"},{"tag":"text","text":"，另一个是"},{"lemmaId":0,"tag":"innerlink","text":"庞涓"},{"tag":"text","text":"。"},{"lemmaId":0,"tag":"innerlink","text":"庞涓"},{"tag":"text","text":"应魏国之邀先于"},{"lemmaId":0,"tag":"innerlink","text":"孙膑"},{"tag":"text","text":"出山，鬼谷子将失传的《孙子兵法》独自传于"},{"lemmaId":0,"tag":"innerlink","text":"孙膑"},{"tag":"text","text":"。"},{"lemmaId":0,"tag":"innerlink","text":"庞涓"},{"tag":"text","text":"当了魏国的元帅，与魏王一同率军进攻楚国，在方城楚国军队相持不下，若拖下去，对魏国十分不利，庞涓派谋士"},{"lemmaId":0,"tag":"innerlink","text":"公孙阅"},{"tag":"text","text":"请鬼谷子为其出一良策，鬼谷子将此事推于"},{"lemmaId":0,"tag":"innerlink","text":"孙膑"},{"tag":"text","text":"。"},{"lemmaId":0,"tag":"innerlink","text":"孙膑"},{"tag":"text","text":"引用《孙子兵法》，向公孙阅献\"上屋抽梯\"之计。"},{"lemmaId":0,"tag":"innerlink","text":"庞涓"},{"tag":"text","text":"用"},{"lemmaId":0,"tag":"innerlink","text":"孙膑"},{"tag":"text","text":"之计，引诱城内楚军出击，然后截断后路，击败了楚军。楚国被迫割城认败。