[--]

Jyutping lei5 gwai2
Pinyin lǐ guǐ

Definitions (Wiktionary)
  1. name
    Li Gui, a character in the novel Water Margin, who impersonates Li Kui
  2. noun, figuratively, neologism
    something or someone that is fake; counterfeit product; impersonator

李鬼 [--]

Jyutping
Pinyin lǐ guǐ

Definitions (CC-CEDICT)
  1. false hero (who pretends to be 李逵[Li3 Kui2]); a fake