chī yī qiàn , cháng yī zhì 
		Fall into the moat and you'll be wiser next time (idiom). One only learns from one's mistakes.
		 
		
		
														
		
		
			 
		
				
		
			Dōng Fēi dà dì qiàn 
		Great East African rift valley
		 
		
		
														
		
		
			 
		
				
		
			chī yī qiàn , zhǎng yī zhì 
		Fall into the moat and you'll be wiser next time (idiom); One only learns from one's mistakes.