狐狸尾巴 fox's tail
Explanation
比喻坏人的本来面目或迷惑人的罪证。
It refers to the true nature of a villain or evidence that exposes deception.
Origin Story
从前，在一个偏僻的山村里，住着一只狡猾的狐狸。它经常化身为美丽的女子，迷惑村里的年轻人，骗取他们的钱财和食物。有一次，它化身为一位美丽的姑娘，来到村长的家里做客。村长是个老谋深算的人，他一眼就看穿了狐狸的伪装。他邀请狐狸与他下棋，并故意在棋盘上设置陷阱，诱使狐狸露出狐狸尾巴。果然，当狐狸得意洋洋地以为自己要赢的时候，村长突然揭开了狐狸的伪装，露出它的狐狸尾巴。狐狸的诡计被识破了，它慌忙逃走，再也不敢在村里出现。从此以后，狐狸尾巴就成了坏人或骗子暴露自己本来面目的代名词。
Once upon a time, in a remote mountain village, lived a cunning fox. It often transformed into a beautiful woman, deceiving the young men in the village and swindling them out of their money and food. Once, it transformed into a beautiful girl and came to visit the village chief's house. The village chief was a shrewd man who could see through the fox's disguise at a glance. He invited the fox to play chess with him and deliberately set traps on the chessboard to lure the fox into revealing its fox's tail. Sure enough, when the fox was complacently thinking that it was about to win, the village chief suddenly revealed the fox's disguise and exposed its fox's tail. The fox's trick was seen through, it hurriedly escaped and dared not appear in the village again. From then on, the fox's tail has become a synonym for villains or deceivers exposing their true nature.
Usage
多用于比喻句，指坏人或骗子暴露自己本来面目的证据。
Often used in metaphors, referring to the evidence that reveals the true nature of a villain or deceiver.
Examples
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他那虚伪的笑容，暴露了他的狐狸尾巴。
ta na xuwei de xiaorong,baoluo le ta de huli weiba.bie kan ta biaoqian yitao beihou yitao,ta de huli weiba chicao hui luochulai de.
His hypocritical smile betrayed his true nature.
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别看他表面一套背后一套，他的狐狸尾巴迟早会露出来的。
No matter how well he disguises himself, his true nature will eventually show itself.