谛听

谛听	dì tīng	to listen carefully
谛	dì	to examine / truth (Buddhism)
听	yǐn	smile (archaic)
听	tīng	to listen to; to hear / to heed; to obey / a can (loanword from English "tin") / classifier for canned beverages / to let be; to allow (Taiwan pr. [ting4]) / (literary) to administer; to deal with (Taiwan pr. [ting4])