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Jyutping mat6 ji5 hon2 wai4 gwai3
Pinyin wù yǐ hǎn wèi guì

Definitions (粵典–words.hk)
  1. 語句
    罕有​嘅​嘢​先​顯​得​珍​貴
    an common expression: items are valued for their rarity

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Jyutping mat6 ji5 hon2 wai4 gwai3
Pinyin wù yǐ hǎn wéi guì

Definitions (CC-CANTO)
  1. (adjective) something is limited, is expensive