Correct
苦功
/ kǔgōng /
Strokes
Definition
hard work/laborious effort/painstaking work
Example
As a Noun
hard work; painstaking efforts
1
Xuéhǎo
学好
yī
一
mén
门
yǔyán
语言
bùyì
不易
,
fēi
非
xiàkǔgōng
下苦功
bùkě
不可
。
The mastery of a language is not easy and requires painstaking efforts.
2
Xiàkǔgōng
下苦功
yánjiū
研究
wèntí
问题
take pains to study the problem
3
Xiàkǔgōng
下苦功
xuéxí
学习
study hard