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Jyutping baau1 laam5 ci4 zung6
Pinyin bāo lǎn cí sòng

Definitions (CC-CEDICT)
  1. to canvas for lawsuits (idiom); to practice chicanery
Definitions (Wiktionary)
  1. phrase, idiomatic
    to pettifog; to engage in legal pettifoggery; to practice chicanery