HSK 4
收费
shōufèi动
to charge a fee
这个公园周末不收费。
Zhè ge gōng yuán zhōu mò bù shōu fèi.
This park does not charge admission on weekends.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
New in the HSK 3.0 word list at level 4.