懂中文 Dong Chinese

刨根问底

páo​gēn​wèn​dǐ

to dig up roots and inquire at the base ; to get to the bottom of sth

Definitions

刨根问底 (刨根問底) 

páo​gēn​wèn​dǐ

to dig up roots and inquire at the base (idiom); to get to the bottom of sth

Sources