About
HSK levels

    头脑 頭腦

    tóunǎo

    1. mind; brains
    2. skull
    3. (fig.) gist (of a matter)
    4. leader; boss

    你要用头脑思考这个问题。 Nǐ yào yòng tóunǎo sīkǎo zhège wèntí.