0 Old HSK word(s):
乃至于* *

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

乃 then / really, indeed / as it turned out, after all / namely
至 reach, arrive / extremely, very
于 in, on, at / go to / surname

Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual