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Jyutping bat1 man6 cing1 hung4 zou6 baak6
Pinyin bù wèn qīng hóng zào bái

Definitions (CC-CEDICT)
  1. not distinguishing red-green or black-white (idiom)
  2. not to distinguish between right and wrong
Definitions (Wiktionary)
  1. phrase, idiomatic
    without forethought
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)