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Jyutping sing4 wun4
Pinyin chéng yuán

Definitions (CC-CEDICT)
  1. city wall
Definitions (Wiktionary)
  1. noun, literary
    city wall
    (syn.) 城墙, 都城, 城垛, 城牆
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)