HSK 6
自愿
zìyuàn动
voluntary
所有参加者都是自愿报名的。
Suǒ yǒu cān jiā zhě dōu shì zì yuàn bào míng de.
All participants registered voluntarily.
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 6.