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Jyutping hoi1 ho2
Pinyin kāi kě

Definitions (Wiktionary)
  1. verb, Classical-Chinese
    to permit; to allow
    (syn.) 准许, 容允, 应允, 许允, 容许, 許可, 允许, 容許, 允准, 許允, 准許, 應允, 允, 许可, 允許