zhī jǐ zhī bǐ , bǎi zhàn bù dài 
		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[Sūn zǐ Bīng fǎ]).
		 
		
		
														
		
		
			 
		
				
		
			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])