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Jyutping ng5 coi2 baan1 laan4
Pinyin wǔ cǎi bān lán

Definitions (Wiktionary)
  1. phrase, idiomatic
    all the colours in profusion; full of bright colours; multicoloured; garish display
    (syn.) 五颜六色, 五彩繽紛, 五彩缤纷, 五顏六色