Wú Yuè 
		states of south China in different historical periods
proverbially perpetual arch-enemies
		 
		
		
														
		
		
			 
		
				
		
			Wú Yuè chūn qiū 
		History of the Southern States Wu and Yue (traditional rivals), compiled by Han historian Zhao Ye 趙曄|赵晔, 10 extant scrolls
		 
		
		
														
		
		
			 
		
				
		
			Wú Yuè tóng zhōu 
		Wu and Yue in the same boat (idiom); fig. cooperation between natural rivals
to collaborate towards a common end
in the same boat together
		 
		
		
														
		
		
					
				
		
			Wú Yuè qū 
		folk song from Wu or from south China more generally