黑咕隆咚 hēi gu lōng dōng

DEFINITIONS

  1. pitch-black
  2. pitch-dark

CHARACTERS

黑 hēi
HSK 2
black; dark; evil, sinister
咕 gu mumble, mutter, murmur; rumble
隆 lōng
HSK 6
prosperous, plentiful, abundant
咚 dōng onomatopoetic, a thumping sound