头脑 + Adjective
头脑 (tóunǎo) means "mind," "brain," or "intellect," referring to a person's mental capacity or way of thinking. It is often used in expressions like 头脑清醒 (clear-minded) or 头脑简单 (simple-minded). It can also appear in titles and creative works, as in 头脑博士 (Dr. Brain/Mind).
他头脑很灵活,什么问题都能很快想到办法。
Tā tóunǎo hěn línghuó, shénme wèntí dōu néng hěn kuài xiǎng dào bànfǎ.
He's very quick-witted and can come up with a solution to any problem.
早上跑完步之后,感觉头脑特别清醒。
Zǎoshang pǎo wán bù zhīhòu, gǎnjué tóunǎo tèbié qīngxǐng.
After a morning run, my mind feels especially clear.
遇到紧急情况,一定要保持头脑冷静。
Yù dào jǐnjí qíngkuàng, yīdìng yào bǎochí tóunǎo lěngjìng.
In an emergency, you must keep a cool head.