Dictionary/刨根问底

刨根问底 刨根問底

páo gēn wèn dǐ

ㄆㄠˊ ㄍㄣ ㄨㄣˋ ㄉㄧˇ
Idiom
1to dig up roots and inquire at the base (idiom); to get to the bottom of sth

Characters