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Jyutping dyun6 wun4 caan4 bik1
Pinyin duàn yuán cán bì

Definitions (Wiktionary)
  1. phrase, idiomatic
    dilapidated and collapsed walls; ruins of a building
    (syn.) 斷壁殘垣, 断壁残垣, 断壁颓垣, 斷壁頹垣

斷垣殘壁 [断-残-]

Jyutping
Pinyin duàn yuán cán bì

Definitions (CC-CEDICT)
  1. lit. walls reduced to rubble (idiom)
  2. fig. scene of devastation
  3. ruins