About
HSK levels

    无间 無間

    wújiàn

    1. very close; no gap between them; hard to separate; indistinguishable
    2. continuously; unbroken

    他们两个人的关系无间,从不吵架。 Tāmen liǎng ge rén de guānxi wújiàn, cóng bù chǎojià.