Ru Kiln, one called "Head of All Kilns on the Earth" in Chinese porcelain history as one of the five famous kilns ("Ru, Guan, Jun, Ge & Ding Kilns") in Song Dynasty, gets the name of "Ru" Since it is located in Ruzhou. This kiln was specially picked out to produce porcelain for the court in Song Dynasty, so its products were called "RU Palace Porcelain" i.e. "Ru Porcelain" put simply. Whose soft quantity, delicate workmanship, unique color and colorful penetrations give you delightful enjoyment and pleasure, Quite often resulting in such characteristic effects of "Blue like the sky, gentle like the gem, fine like cicada' s wings, shining like the stars and smooth like the glaze". Ru Kiln technique survived various wars and anarchical periods in history with much treasured pieces of porcelain spread all over the world in museums of Peking, Taipei, Britain, Japan, etc; since it is the world' s rare treasure of mankind.