闭塞

闭塞	bì sè	to stop up / to close up / hard to get to / out of the way / inaccessible / unenlightened / blocking
闭	bì	to close / to stop up / to shut / to obstruct
塞	sāi	to plug; to stop up; to stuff in / (bound form) a stopper; a cork
塞	sài	(bound form) strategic stronghold
塞	sè	(bound form) to block; to obstruct