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Jyutping m4 sik1 zyun3 bok3
Pinyin wú shí zhuǎn bó

Definitions (粵典–words.hk)
  1. 語句
    形容​人死​咕咕​唔​識​變通
    stubborn; inflexible; unable to adapt; literally: does not know how to change shoulder

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Jyutping m4 sik1 zyun3 bok3
Pinyin n2 shí zhuǎn bó

Definitions (CC-CANTO)
  1. to be pig-headed and lacking the ability to adapt [colloquial]