About
HSK levels

    通用

    tōngyòng

    1. to use anywhere, anytime (card, ticket etc); to be used by everyone (language, textbook etc)
    2. (of two or more things) interchangeable

    这张公交卡在全市都是通用的。 Zhè zhāng gōngjiāo kǎ zài quánshì dōu shì tōngyòng de.