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Jyutping gau6 seoi6
Pinyin jiù suì

Definitions (粵典–words.hk)
  1. 名詞、專名、香港
    紅​磡​海底隧道​嘅​別​稱
    another name for Cross-Harbour Tunnel, literally "old tunnel"
  2. 近義詞
    中隧、紅隧