知彼知己 zhī bǐ zhī jǐ

zhī bǐ zhī jǐ set phrase to know the enemy and know oneself
Domain: Idiom 成语
Notes: Quote: idiom from the Warring States period text 孫子兵法 “Art of War” by Sunzi, section 10 (tr. by Giles 1910, p. 112; CC-CEDICT '知彼知己'; Guoyu '知彼知己')

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