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Jyutping gwai1 hau2
Pinyin guī kǒu

Definitions (CC-CEDICT)
  1. to return to one's original trade
  2. to put (a business etc) under the administration of the relevant central authority
  3. (the) relevant (department in charge of sth)
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)