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Jyutping cin4 ji4
Pinyin qián er

Definitions (Wiktionary)
  1. noun, Jin, Mandarin, dialectal
    day before yesterday
  2. noun, Mandarin, dialectal
    time

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Jyutping cin4 ji4
Pinyin qián r5

Definitions (CC-CEDICT)
  1. before
  2. day before yesterday