bringing up a tiger to injure oneself
It is a Chinese idiom, Pinyin is y ǎ NGH ǔ sh ā ngsh ē n, which means to raise a tiger and hurt yourself; it means to let the enemy stay in trouble. It's from the story of a thousand gold.
The origin of Idioms
Shen CAI of the Ming Dynasty wrote in the story of a thousand gold, entering the pass: "king, you should only strike it early. If it's too late, it will hurt you."
Idiom usage
It means that you hurt yourself.
Examples
Wu Shu heard this and yelled, "that's all, that's all! It's a way to raise a tiger and hurt yourself! " The fifth and seventh chapter of Shuoyue Quanzhuan
bringing up a tiger to injure oneself
new problems crop up unexpectedly - zhī wài shēng zhī
sb. who makes minimal corrections and thereby improves a piece of writing - yī zì shī
The devil grabs the wolf and howls - guǐ zhuā láng háo