杜门

杜门	dù mén	to close the door (lit. and fig.)
杜	Dù	surname Du
杜	dù	birchleaf pear (tree) / to stop / to prevent / to restrict
门	Mén	surname Men
门	mén	gate; door; doorway; gateway; opening (CL:扇) / valve; switch; other door-like or gate-like structure / way to do sth; knack; method; approach / family; household; lineage / (bound form) sect; school; faction (religious or academic) / (bound form) class; category; division; phylum / classifier for courses, fields of study, branches of technology, relatives by marriage, guns etc / (suffix) -gate (scandal)