HSK 7-9
费劲
fèijìn动
to require effort; strenuous
这个箱子搬起来很费劲。
Zhè ge xiāng zi bān qǐ lái hěn fèi jìn.
This box takes considerable effort to move.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
Appears across levels (7-9) in the HSK 3.0 word list.