know yourself and know your enemy, and you will never be defeated (idiom, from Sunzi's "The Art of War" 孫子兵法|孙子兵法[Sun1 zi3 Bing1 fa3])
trad. 知己知彼,百戰不殆
Also written 知己知彼,百戰不殆【zhī jǐ zhī bǐ , bǎi zhàn bù dài】
know yourself and know your enemy, and you will never be defeated (idiom, from Sunzi's "The Art of War" 孫子兵法|孙子兵法[Sun1 zi3 Bing1 fa3])
trad. 知己知彼,百戰不殆
Also written 知己知彼,百戰不殆【zhī jǐ zhī bǐ , bǎi zhàn bù dài】