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Jyutping bik1 loeng4 wai4 coeng1
Pinyin bī liáng wéi chāng

Definitions (CC-CEDICT)
  1. to force an honest girl into prostitution (idiom)
  2. to debauch
Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. phrase, idiomatic
    to force a lady into prostitution
    (syn.) 迫良为娼, 迫良為娼