From the Wikipedia page [1]
Huoshan Huangya (simplified Chinese: 霍山黄芽; traditional Chinese: 癨山黃芽) is a yellow tea from Anhui Province in China: it is the Imperial Tribute Tea and dates back to the Ming Dynasty. The dry tea leaves have a shiny appearance and are very similar to Huang Shan Mao Feng tea. When steeped the leaves reveal a very peppery and fresh taste accompanied by an unusual green-yellow color of the brew. As with all mostly bud teas the color and fragrance are slight.