静如处子，动如脱兔jìng rú chǔ zǐ , dòng rú tuō tù

be clam (/quiet) as a virgin and swift as a hare;be deliberate in counsel and prompt in action
❍ 他深通兵法，在作战中～，取得一个又一个的胜利。He was well versed in art of war. In military operations,he was deliberate in counsel and prompt in action,and thus gained one victory after another.

静如处子，动如脱兔jing ru chu zi,dong ru tuo tu

处子：未出嫁的女子。脱兔：奔逃的兔子。未行动时平静得像处女一样安详，行动起来像奔逃的兔子一样敏捷迅速。语本《孙子·九地》：“是故始如处女，敌人开户；后如脱兔，敌不及拒。”
【也作】静如处女，动如脱兔
【注意】处，不读chu。