This tea is handmade with hulled millet-size fresh shoots harvested from the tea trees with deep roots, which have grown by absorbing divine spirit and microelement during the spring equinox, which falls on March 20, when a windy weather in the blooming season is jealous of a touch of spring in the air. It has been classified as one of the super premium teas since Goryo Dynasty(935 ~ 1391) in Korea. Its annual production is limited to 2 ~ 3 kg because it is not only difficult to harvest and process the leaves, but also there is a concern on spoiling tea patch.