Jianzhan(also known as Tenmoku pottery) is originating in the Song Dynasty,use as tea bowl(Chawan). In China,people named it Jianzhan, in Japan, people named it Tenmoku pottery.
Artist adopts local clay rich in iron as material to make glaze&body,fired in 1200 degree Celsius. The rich iron content helps to soft water, it is widely use to drinking tea and liquor.