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Jyutping daai6 tou4 gong2
Pinyin dà táo gǎng

Definitions (Wiktionary)
  1. name
    refugee wave from the People's Republic of China to British Hong Kong (that occurred between 1950s to the 70s)

大逃港 [---]

Jyutping
Pinyin dà táo gǎng

Definitions (CC-CEDICT)
  1. exodus to Hong Kong (from mainland China, 1950s-1970s)