About
HSK levels

    kāi

    1. to open (transitive or intransitive); to turn on; to put in operation; to operate; to run
    2. (of ships, vehicles, troops etc) to start
    3. to boil
    4. to write out (a prescription, check, invoice etc)
    5. (directional complement) away; off
    6. carat (gold)
    7. abbr. for Kelvin, 開爾文|开尔文[Kai1 er3 wen2]
    8. abbr. for 開本|开本[kai1 ben3], book format

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