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Jyutping daai6 hei2 gwo3 mong6
Pinyin dà xǐ guò wàng

Definitions (CC-CEDICT)
  1. overjoyed at unexpected good news (idiom)
Definitions (粵典–words.hk)
  1. 形容詞
    聽到​意料之外​嘅​好消息​,​開​心得​滯
    overjoyed at unexpected good news
Definitions (Wiktionary)
  1. phrase, idiomatic
    to be delighted that things are better than one expected; to be overjoyed
    (syn.) 喜出望外
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)