0 Old HSK word(s):
心里有底* *

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

心 heart / mind, intelligence / soul
里 unit of distance / village / lane
有 have, own, possess / exist
底 bottom, underneath, underside
Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual