七月流火 [－－－－]

Jyutping cat1 jyut6 lau4 fo2
Pinyin qī yuè liú huǒ

Definitions (Wiktionary)
  1. phrase, idiomatic
    scorching heat during July
  2. phrase, idiomatic
    the summer heat recedes during the seventh lunar month, and the cold season becomes imminent