0 Old HSK word(s):
勤学苦练* *

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

勤 industrious, diligent, attentive
学 learning, knowledge / school
苦 bitter / hardship, suffering
练 to practice, drill, exercise, train
Hsk Characters:
HSK -Characters and beyond:
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