宿敌

宿敌	sù dí	old enemy
宿	sù	old variant of 宿
宿	Sù	surname Su
宿	sù	lodge for the night / old / former
宿	xiǔ	night / classifier for nights
宿	xiù	constellation
敌	dí	(bound form) enemy / (bound form) to be a match for; to rival / (bound form) to resist; to withstand