按兵不动

ànbīng-bùdòng

(1) [not throw the troops into battle; take no action; be kept imobilized; bide one's time]∶指挥官止住军队, 暂不行动, 等待战机

(2) [bide one's time]∶比喻接受任务后暂不执行, 以观望形势的发展