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Jyutping bik1 gung1 seon3
Pinyin bī gōng xìn

Definitions (Wiktionary)
  1. verb
    to obtain confessions by forceful means and give them credence

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Jyutping bik1 gung1 seon3
Pinyin bī gòng xìn

Definitions (CC-CEDICT)
  1. to obtain confessions by compulsion
  2. confession under duress