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Jyutping sai3 si6 naan4 liu2
Pinyin shì shì nán liào

Definitions (Wiktionary)
  1. phrase, idiomatic
    worldly affairs are difficult to predict
Examples (粵典–words.hk)
  1. Cantonese
    世事难料
    世事難料
    sai3 si6 naan4 liu6
    • Life is full of uncertainties.