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Jyutping maang4 kyun4 daa2 sei2 lou5 si1 fu2
Pinyin máng quán dǎ sǐ lǎo shī fù

Definitions (粵典–words.hk)
  1. 語句
    新手​用毫​無​章法​嘅​手段​打敗​經驗​老​到​嘅​高手
    to defeat someone of greater skill or experience by using no strategy at all
  2. 參看
    盲拳打死老師傅

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Jyutping maang4 kyun4 daa2 sei2 lou5 si1 fu2
Pinyin máng quán2da sǐ lǎo shi1fū

Definitions (CC-CANTO)
  1. to defeat a more skilful or experienced person by sheer fluke [colloquial]