IdiomAnimalsVietnamese

Cõng rắn cắn gà nhà

Meaning: To bring in an outsider who harms your own people.

Literally: To carry a snake home to bite your own chickens

Example: “Bán bí mật công ty cho đối thủ là cõng rắn cắn gà nhà.” — Selling company secrets to a rival is letting in a Trojan horse.

English equivalent: A Trojan horse

Origin: Carrying a snake home on one's back to bite one's own chickens is bringing in an outsider who harms one's own people. The Vietnamese saying is used above all of those who collaborate with a foreign enemy against their own country.

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