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Jyutping faan2 gwo1 jat1 gik1
Pinyin fǎn gē yī jí

Definitions (Wiktionary)
  1. phrase, idiomatic
    to turn one's weapon around and strike; (figuratively) to turn against those one has wrongly sided with

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Jyutping faan2 gwo1 jat1 gik1
Pinyin fǎn gē yī jī

Definitions (Wiktionary)
  1. phrase, idiomatic
    to turn one's weapon around and strike; (figuratively) to turn against those one has wrongly sided with