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Jyutping bou3 jing3 bat1 song2
Pinyin bào yìng bù shuǎng

Definitions (CC-CEDICT)
  1. divine retribution is unfailing (idiom)
  2. one is inevitably punished for one's misdeeds
Examples (Wiktionary)
  1. Mandarin
    报应不爽
    報應不爽
    bào yìng bù shuǎng
    • well-deserved retribution