置之不问

置之不问	zhì zhī bù wèn	to pass by without showing interest (idiom)
置	zhì	to install / to place / to put / to buy
之	zhī	(possessive particle, literary equivalent of 的) / him / her / it
不	bù	no; not so / (bound form) not; un-
不问	bù wèn	to pay no attention to / to disregard / to ignore / to let go unpunished / to let off
问	wèn	to ask; to inquire