以眼還眼

yi3 yan3 huan2 yan3

an eye for an eye (idiom); fig. to use the enemy's methods against him, to give sb a taste of his own medicine

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以眼還眼|以眼还眼 [yǐ yǎn huán yǎn] ► an eye for an eye (idiom); fig. to use the enemy's methods against him ► to give sb a taste of his own medicine