About
HSK levels

    1. to enter; to go into; to join; to become a member of
    2. (bound form) to conform to (as in 入時|入时[ru4 shi2])
    3. abbr. for 入聲|入声[ru4 sheng1]
    4. (on product packaging, after {number n} + {classifier}) containing (n pieces) (from Japanese 入 "iri")

    我们进入了一个新的时代。 Wǒmen jìnrù le yī gè xīn de shídài.