勇气 (yǒngqì) is a noun meaning "courage" or "bravery." It refers to the inner strength or resolve needed to face difficulty or danger. It is commonly used in phrases like 有勇气 (to have courage) and 鼓起勇气 (to muster courage).
她终于鼓起勇气向老板提出了辞职。
Tā zhōngyú gǔqǐ yǒngqì xiàng lǎobǎn tíchū le cízhí.
She finally mustered the courage to resign to her boss.
面对困难的时候,我们需要勇气。
Miànduì kùnnán de shíhòu, wǒmen xūyào yǒngqì.
When facing difficulties, we need courage.
你有勇气一个人去旅行吗?
Nǐ yǒu yǒngqì yī gè rén qù lǚxíng ma?
Do you have the courage to travel alone?