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Jyutping seoi2 gwai2 sing1 sing4 wong4
Pinyin shuǐ guǐ shēng chéng huáng

Definitions (粵典–words.hk)
  1. 語句
    形容​小人得志​,​批評​由​資格​不足者​升上​領導​位置​。
    used to characterise someone who has undeservedly risen up in the world; literally: river ghost is promoted to city god
    • 挑!佢都有得升?真係水鬼升城隍囉。
      挑!佢都有得升?真系水鬼升城隍啰。
      tiu1, keoi5 dou1 jau5 dak1 sing1, zan1 hai6 seoi2 gwai2 sing1 sing4 wong4 lo3
      Shit! How did he get promoted? He does not deserve that position at all.

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Jyutping seoi2 gwai2 sing1 sing4 wong4
Pinyin shuǐ guǐ shēng chéng huang

Definitions (CC-CANTO)
  1. describes a person who was in a low ranking position (in work or life) who is now intoxicated with success; a small man having greatness thrust upon him
Examples (粵典–words.hk)
  1. Cantonese
    水鬼升城隍
    水鬼升城隍
    seoi2 gwai2 sing1 sing4 wong4
    • used to characterise someone who has undeservedly risen up in the world; literally: the river ghost is promoted to the City God
  2. Cantonese
    水鬼升城隍
    水鬼升城隍
    • someone who has undeservedly risen up in the world
  3. Cantonese
    挑!佢都有得升?真系水鬼升城隍啰。
    挑!佢都有得升?真係水鬼升城隍囉。
    tiu1, keoi5 dou1 jau5 dak1 sing1, zan1 hai6 seoi2 gwai2 sing1 sing4 wong4 lo3
    • Shit! How did he get promoted? He does not deserve that position at all.