0 Old HSK word(s):
流于形式* *

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

流 flow, circulate, drift / class
于 in, on, at / go to / surname
形 form, shape, appearance
式 style, system, formula, rule
Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual