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Jyutping jyu4 wan1
Pinyin yú wēn

Definitions (Wiktionary)
  1. noun
    lingering warmth; residual temperature
  2. noun, figuratively
    lingering effect or memory

餘溫 [余温]

Jyutping
Pinyin yú wēn

Definitions (CC-CEDICT)
  1. residual heat; remaining warmth
  2. (fig.) lingering enthusiasm