knowing the enemy and yourself will get you unscathed through a hundred battles (idiom, from Sunzi's "The Art of War")

知彼知己，百战不殆

zhī bǐ zhī jǐ , bǎi zhàn bù dài

Word

New to Chinese?Start with pinyin·See the learning path

Want to practice speaking with a real teacher? Find a 1-on-1 Chinese tutor on italki (affiliate)