HSK 7-9
充当
chōngdāng动
to serve as; to act as; to play the role of
他在项目中充当技术顾问。
Tā zài xiàng mù zhōng chōng dāng jì shù gù wèn.
He serves as a technical adviser on the project.
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.