不当家不知柴米贵

Traditional (Taiwan): 不當家不知柴米貴

bùdāngjiābùzhīcháimǐguì ㄅㄨˋ ㄉㄤㄐㄧㄚㄅㄨˋ ㄓㄔㄞˊ ㄇㄧˇ ㄍㄨㄟˋ

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

Character by character

Sources