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Jyutping bing1 taan3 bat1 tung4 hei3
Pinyin bīng tàn bù tóng qì

Definitions (Wiktionary)
  1. phrase, idiomatic
    incompatible; unmixable
    (syn.) 冰炭不同爐, 冰炭不同𬙎, 冰炭不同罏, 冰炭不同炉