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Jyutping hak1 soeng1 cou1 zok3
Pinyin hēi xiāng cāo zuò

Definitions (CC-CEDICT)
  1. see 暗箱操作[an4 xiang1 cao1 zuo4]
Examples (粵典–words.hk)
  1. Cantonese
    佢哋话就话要依法治国,实际就黑箱操作。
    佢哋話就話要依法治國,實際就黑箱操作。
    • They said that this country is governed by law, but in truth, it is governed by greed.