gain mastery by striking only after the enemy has struck
Second strike, Chinese idiom, Pinyin is h ò UF ā zh ì R é n, which means waiting for the other party to fight first, then seizing the opportunity to fight back and subdue the other party. From Xunzi Yibing.
The origin of Idioms
"Xunzi · Yibing" says: "the later is the best, the first is the best. This is also the key technique of using military."
Idiom usage
The battle of Feishui in the Qin, Jin and other famous wars are different between the strong and the weak. The weak take the first step to win. (Mao Zedong's strategic issues in China's Revolutionary War)
Analysis of Idioms
Take retreat as advance, take retreat as attack
gain mastery by striking only after the enemy has struck
the language fails to express the meaning - cí bù dá yì