熱火朝天 [热－－－]

Jyutping jit6 fo2 ciu4 tin1
Pinyin rè huǒ cháo tiān

Definitions (CC-CEDICT)
  1. in full swing (idiom)
  2. (in a) frenzy
  3. buzzing with activity
Definitions (Wiktionary)
  1. phrase, idiomatic
    buzzing or bustling with activity; in full swing