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Jyutping haak1 baak6 mou4 soeng4
Pinyin hēi bái wú cháng

Definitions (粵典–words.hk)
  1. 名詞、專名
    東亞​文化圈​民間​宗教​中​,​陰間​神明​轄​下​一​對​負責​勾攝​魂魄​嘅​下​屬​;​黑無常​形象​為​黑面​黑袍​、​白無常​形象​為​白面​白袍
    "Black and White Impermanence", a pair of subordinates of deities in charge of the netherworld in the folk religion in East Asian cultural sphere, who escort the spirits of the dead. One of them has a black face in a black robe, another a white face in a white robe.

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Jyutping hak1 baak6 mou4 soeng4
Pinyin hēi bái wú cháng

Definitions (CC-CEDICT)
  1. (Chinese folk religion) Heibai Wuchang: two deities, one dressed in black and the other in white, responsible for escorting the spirits of the dead to the underworld
Definitions (粵典–words.hk)
  1. 名詞、專名
    東亞​文化圈​民間​宗教​中​,​陰間​神明​轄​下​一​對​負責​勾攝​魂魄​嘅​下​屬​;​黑無常​形象​為​黑面​黑袍​、​白無常​形象​為​白面​白袍
    "Black and White Impermanence", a pair of subordinates of deities in charge of the netherworld in the folk religion in East Asian cultural sphere, who escort the spirits of the dead. One of them has a black face in a black robe, another a white face in a white robe.
Definitions (Wiktionary)
  1. name
    Heibai Wuchang (two deities in charge of escorting the spirits of the dead to the underworld)
    (syn.) 黑白無常, 謝范將軍, 七爺八爺, 大二阿伯, 矮躼伯仔, 大二爺伯, 范謝將軍