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Jyutping soeng6 caak6 syun4
Pinyin shàng zéi chuán

Definitions (Wiktionary)
  1. verb, figuratively, verb-object
    to embark on a hopeless adventure (often mistakenly or unwillingly)

上賊船 [-贼-]

Jyutping
Pinyin shàng zéi chuán

Definitions (CC-CEDICT)
  1. lit. to board a pirate ship (idiom)
  2. fig. to associate with criminals