Đạ Huoai is a former rural district of Lâm Đồng province in the Central Highlands region of Vietnam. As of 2003 the district had a population of 34,039. The district covers an area of 490 km2. The district capital lies at Ma Đa Guôi.
Name Its name Đạ Huoai (Daa-huoaai, "the stream of waiting") is related with the legend of Da Mbri, which means "river Mbri" or "hero Bri". After his death, Bri became a big river.
In addition, Mdaa-guih (now Ma Đa Guôi town) means "a place of pause", which refers to where Bri was still waiting for his lover.
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