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Jyutping tou4 lung4 gei6
Pinyin tú lóng jì

Definitions (粵典–words.hk)
  1. 名詞
    高超​但​係​唔​實​用​嘅​技​藝
    advanced but impractical craftsmanship
    • 讀數學系嚟做咩唧?學埋啲屠龍技。
      读数学系嚟做咩唧?学埋啲屠龙技。
      duk6 sou3 hok6 hai6 lei4 zou6 me1 zek1? hok6 maai4 saai3 di1 tou4 lung4 gei6.
      What's the purpose of studying Maths in university when all that are taught are merely advanced but never practical?
Examples (粵典–words.hk)
  1. Cantonese
    读数学系嚟做咩唧?学埋啲屠龙技。
    讀數學系嚟做咩唧?學埋啲屠龍技。
    duk6 sou3 hok6 hai6 lei4 zou6 me1 zek1? hok6 maai4 saai3 di1 tou4 lung4 gei6.
    • What's the purpose of studying Maths in university when all that are taught are merely advanced but never practical?