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Jyutping daai6 cing1 mong4 liu5
Pinyin dà qīng wáng le

Definitions (Wiktionary)
  1. phrase, Internet
    To show that the person being spoken to already knew something that the speaker had mentioned.; Queen Anne's dead
    • 你才知道現在2021年了?兄弟,大清亡了。
      你才知道现在2021年了?兄弟,大清亡了。
      nǐ cái zhī dào xiàn zài 2021 nián le ? xiōng dì , dà qīng wáng le .
      Did you just know it's 2021 now? Queen Anne's dead, dude!
Examples (Wiktionary)
  1. Mandarin
    你才知道现在2021年了?兄弟,大清亡了。
    你才知道現在2021年了?兄弟,大清亡了。
    nǐ cái zhī dào xiàn zài 2021 nián le ? xiōng dì , dà qīng wáng le .
    • Did you just know it's 2021 now? Queen Anne's dead, dude!