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知己知彼，百战不殆

zhī jǐ zhī bǐ , bǎi zhàn bù dài

9-character word Traditional 知己知彼，百戰不殆

What 知己知彼，百战不殆 means

1. know yourself and know your enemy, and you will never be defeated (idiom, from Sunzi's "The Art of War" {孙子兵法|Sūn zǐ Bīng fǎ})

The characters in 知己知彼，百战不殆

• 知zhīto know; to be aware
• 己jǐself; oneself; sixth of the ten Heavenly Stems 十天干
• 知zhīto know; to be aware
• 彼bǐthat; those; (one) another
• 百bǎihundred; numerous; all kinds of
• 战zhànto fight; fight; war
• 不bùno; not so; (bound form) not; un-
• 殆dài(literary) dangerous; perilous; (literary) almost; well-nigh