刀山火海 dāo shān huǒ hǎi

DEFINITIONS

  1. lit. mountains of daggers and seas of flames
  2. fig. extreme danger (idiom)

CHARACTERS

刀 dāo knife; old coin; measure
山 shān mountain, hill, peak
火 huǒ fire, flame; burn; anger, rage
海 hǎi sea, ocean; maritime