詢根問底 xún gēn wèn dǐ

DEFINITIONS

  1. lit. to examine roots and inquire at the base (idiom); to get to the bottom of sth

CHARACTERS

詢 xún inquire into, ask about; consult
根 gēn
HSK 3
root, base(d on); foundation
問 wèn ask (about), inquire after
底 dǐ
HSK 4
bottom, underneath, underside