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Jyutping wong4 faan3 keoi1
Pinyin huáng fàn qū

Definitions (Wiktionary)
  1. name
    area flooded by the Yellow River in the 1938-47 Yellow River flood, comprising many counties in the provinces of Henan, Anhui and Jiangsu

黃泛區 [黄-区]

Jyutping
Pinyin huáng fàn qū

Definitions (CC-CEDICT)
  1. Huang He Inundated Area, the area flooded in 1938 when dikes along the Yellow River were destroyed in an attempt to halt the advance of Japanese troops
  2. (historically) Huang He floodable area
  3. red-light district