Quiet as a virgin, moving as a rabbit
The synonym "Jing Ru ò ch ǔ Z ǐ, D ò ngru ò Tu ō t ù": Chinese Taoist philosophy. It means that when the army is not in action, it is as calm and steady as an unmarried girl, and when it is in action, it is as agile and rapid as a flying rabbit. It means "quiet as a virgin, moving as a rabbit".
explain
When you don't act, you are as quiet as an unmarried woman. When you act, you are as agile as an escaped rabbit. (Virgin: unmarried woman, i.e. virgin; rabbit: Runaway rabbit)
source
It is used in the art of war "nine places of Sun Tzu": "so the beginning is like a virgin, and the enemy opens an account; the later is like a rabbit, and the enemy can't refuse." that is, there is movement and stillness.
Routine
The ancients said, "quiet as a virgin, moving as a rabbit." that is to say, when you don't move, you should be like a girl hiding in her boudoir, moving as fast as a rabbit off the net. ——Yao xueyin, Li Zicheng, Vol.2, chapter 35
Still as a virgin, moving as a rabbit
discard the old ways of life in favour of the new - gé gù dǐng xīn
drink three cups of wine as forfeit - jīn gǔ jiǔ shù