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Jyutping hoi1 hau2 siu3
Pinyin kāi kǒu xiào

Definitions (Wiktionary)
  1. noun
    deep-fried sesame cookie ball
    (syn.) 坼口棗, 麻球, 開口兒笑, 笑口棗, 開口笑, 開口棗, 笑棗