至寶 [－宝]

Jyutping zi3 bou2
Pinyin zhì bǎo

Definitions (CC-CEDICT)
  1. most valuable treasure
  2. most precious asset
Definitions (Wiktionary)
  1. noun
    most valuable treasure; most precious asset
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）