To shut the door and refuse to admit people; to keep oneself secluded and deny access.
他最近一直闭门不纳，很少出门，让朋友们有些担心。
He has been shutting himself away recently, seldom going out, which has made his friends a bit worried.
Next Idiom
To shut the door and refuse to admit people; to keep oneself secluded and deny access.