0 Old HSK word(s):
刨根问底* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

刨 carpenter's plane / plane, level
根 root, base(d on) / foundation
问 ask about, inquire after
底 bottom, underneath, underside
Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual