Guifei means Emperor's concubine and is a relatively new type of production, which has been invented after one of the latest big earthquakes in Taiwan, near the mountain of Dongding. The tea gardens were untended for a while, during which the tea bushes were attacked by insects. As the tea bushes were not harvested in spring, the infested tea leaves grew too large to be used for the typical Oriental Beauty. So they were used to make a greener, ball-shaped Oolong tea: after the oxidation, the leaves - often with the stems - are alternately fired in heating drums and drums and formed into small lumps. Guifei combine the lightness of green Oolong with the heavy and fruity-sweet notes of Oriental Beauties.