The Ru Kiln, located in Lunru county, in Henan province of China, represents another major celadon school that Rose in northern China in Song Dynasty. It is one of the major 5 government kiln from ancient China till now. In similiar fashion to Longquan kiln, Ru kiln Porcelains also have crackles( light mark of crackles) on, which is made by small amouns of iron in the glaze that oxidize and turn greenish when fired. There are several types of Ru wares color, like moon white, azure, beanÕs green, robin’s egg green, sky green, pink green and so on. The crackles will become more and more obvious as it absorb tea liquid, which is quite similiar to Yixing pot.
There is one vivid description for the Ru Kiln. Cyan like the sky; surface like jade. This Gaiwan is very easy/convenient to use, as there are two tied cluster of strings at the edge of cup, to avoid harming the hand, when brew the tea. Also, it is designed to have 4 little holes at the spout to filter the tea leaves and easy to prepare tea.
The way to polish/moisten the Ru Kiln wares is exactly the same as Yixing wares, which requires to clean up the wares by water after you stop using it and should dry it completely before you put them aside for a long time; otherwise, the tea stain will disrupt the elegant, shiny surface of wares, or the tea left inside wares get mouldy, if not clean them in time, it will influence the taste of tea liquid.