閉關自守

close the country to international intercourse

self / oneself / from / since / naturally / surely

to guard / to defend / to keep watch / to abide by the law / to observe (rules or ritual) / nearby / adjoining

to close / to stop up / to shut / to obstruct

to close the passes / to seal off the country / seclusion (monastic practice, e.g. of Chan Buddhists)

mountain pass / to close; to shut; to turn off / to confine; to lock (sb) up; to shut (sb in a room, a bird in a cage etc) / to concern; to involve