0 Old HSK word(s):
不知天高地厚* * 天高地厚* *

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

天 sky, heaven / god, celestial
高 high, tall / lofty, elevated
地 earth / soil, ground / region
厚 thick / substantial / greatly
Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual