冰火兩重天 [－－两－－]

Jyutping bing1 fo2 loeng5 cung4 tin1
Pinyin bīng huǒ liǎng chóng tiān

Definitions (Wiktionary)
  1. adj
    like two different worlds; different as night and day
  2. noun, slang
    A massage technique using both hot and cold stimuli.