Chyi Yu (simplified Chinese: 齐豫; traditional Chinese: 齊豫; pinyin: Qí Yù; born October 17, 1957 in Taichung, Taiwan), is a Taiwanese singer. She is also the elder sister of Taiwanese singer songwriter Chyi Chin齊秦, and is best known for her 1979 hit, "The Olive Tree" (橄欖樹). She is a practising Buddhist.Chyi Yu is a protege of the late Taiwanese composer and songwriter, Li Tai-hsiang. Li wrote one of Chyi Yu's best known singles, "The Olive Tree," which was released in 1979.