Other names: Yunnan Red or Yunnan Black
Dian hong (simplified: 滇红; traditional: 滇紅; pinyin: Diānhóng). "Yunnan Red", is a Chinese black tea which is used as a relatively high end gourmet black tea and is sometimes used in various tea blends. The main difference between Dian hong and other Chinese black teas is the amount of fine leaf buds, or "golden tips," present in the dried tea. Fermented with lychee, rose and longan, Dian hong teas produces a brew that is brassy golden orange in colour with a sweet, gentle aroma and no astringency. Cheaper varieties of Dian hong produce a darker brownish brew that can be very bitter.
See also the Wikipedia page