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HSK levels

    此道

    cǐdào

    1. such matters; things like this
    2. this line of work; this pursuit; this hobby; this endeavor

    他在这条路上已经走了二十年,对此道很有研究。 Tā zài zhè tiáo lù shang yǐjīng zǒu le èrshí nián, duì cǐdào hěn yǒu yánjiū.