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Jyutping daa2 gwaa3
Pinyin dǎ guà

Definitions (CC-CEDICT)
  1. to tell sb's fortune using divinatory trigrams
Definitions (Wiktionary)
  1. verb
    to tell someone's fortune; to divine (usually using the eight divinatory trigrams of the Book of Changes)
    (syn.) 占卦, 卜问, 擺卦仔, 跋卦, 做卦, 算卦, 摆卦仔, 卜問, 卜卦
Examples (粵典–words.hk)
  1. Cantonese
    卖遮通常都系望天打卦。
    賣遮通常都係望天打卦。
    maai6 ze1 tung1 soeng4 dou1 hai6 mong6 tin1 daa2 gwaa3.
    • Selling umbrellas often depends on the weather.