不當家不知柴米貴

a person who doesn't manage a household would not be aware how expensive it is (idiom)

no; not so / (bound form) not; un-

unsuitable / improper / inappropriate

to be / to act as / manage / withstand / when / during / ought / should / match equally / equal / same / obstruct / just at (a time or place) / on the spot / right / just at

at or in the very same... / suitable / adequate / fitting / proper / to replace / to regard as / to think / to pawn / (coll.) to fail (a student)

to manage the household / to be the one in charge of the family / to call the shots / to be in charge

see 傢伙|家伙[jia1 huo5]

home / family / (polite) my (sister, uncle etc) / classifier for families or businesses / refers to the philosophical schools of pre-Han China / noun suffix for a specialist in some activity, such as a musician or revolutionary, corresponding to English -ist, -er, -ary or -ian / CL:個|个[ge4]

not to know / unaware / unknowingly / fig. not to admit (defeat, hardships, tiredness etc)

to know / to be aware

firewood / lean (of meat) / thin (of a person)

rice / CL:粒[li4] / meter (classifier)

expensive / noble / precious / (honorific) your