fight like kilkenny cats
The Chinese idiom Li ǎ NGH ǔ Xi ā ngzh ē ng means that two tigers fight each other, which means that the two powerful sides fight each other. It comes from Qin CE Er, Warring States strategy.
The origin of Idioms
"The two tigers fight against each other today. The small one will die, and the big one will be hurt."
Idiom usage
Both sides are hurt. example there is nothing better than Qin and Chu in the world. Today, I heard that the king wanted to attack Chu, but two tigers were fighting each other. Biography of Chunshen in historical records: I'm a prime minister and a junior doctor. I don't know why. Recently, as long as I fight with the senior doctor Zhao Zhengqing, I think there will be a wound in the fight between the two tigers. Zhang Wei's comments on Bayi Ji by Xu yuan of Ming Dynasty
Idiom story
During the Warring States period, South Korea and Wei had been fighting for more than a year, but they were still neck and neck. King Hui of Qin wanted to send troops to intervene. Chen Fu, an envoy of Chu, told King Hui that Bian Zhuangzi took advantage of the fact that fighting between the two tigers was bound to cause one injury. When they were both defeated, he killed two tigers at one stroke. He advised King Hui of Qin to take the strategy of watching the tigers fight and wait for the opportunity to destroy the two countries.
fight like kilkenny cats