The collection of tea masters strictly pick top level of winter Oolong tea and sweet olive in late Autumn by hand. We use advanced technology of extreme infra-red ray to bake with small fire slowly in every year to store in earthenware pots for fermented aging. The appearance of tea leaves is jet-black, the color of tea soup is agate, transparent and bright. Sweet olive’s fragrance, rich and smooth taste to lead a person to endless aftertastes.