中文拼音： zhi1 ji3 zhi1 bi3 , bai3 zhan4 bu4 dai4

中文繁体： 知己知彼，百戰不殆

英文翻译： Know yourself and know your enemy, and you will never be defeated (idiom, from Sunzi's Art of War 孫子兵法|孙子兵法[Sun1 zi3 Bing1 fa3]).