The thousand-year-old kiln fire brings back the "thousand peaks of emerald green."

Zhejiang is the birthplace of porcelain and the main production area of ancient celadon. If the Yue Kiln celadon of the Tang Dynasty is as smooth as ice, then the Longquan celadon of the Song Dynasty is as warm as jade. Ceramics are transformed from clay, absorbing the agility of water, the depth of earth, and the tempering of fire, forming various types of ceramics such as celadon, white porcelain, black pottery, and purple sand. During the Eastern Han Dynasty, dragon kilns had become commonly used kilns in Zhejiang. They were built on sloping hillsides and consisted of three parts: the combustion chamber, the firing chamber, and the smoke chamber. Dragon kilns had the advantages of low construction cost, fast burning speed, and easy temperature rise and rapid cooling. During the Jin Dynasty, the craftsmen of the Yue Kiln dug a small window every 1.3 meters on the kiln wall as a place to put firewood, ensuring that the porcelain blanks were all within the range of the burning firewood. The kiln workers invented various kiln tools to improve the firing method, such as saggars, pads, rings, and support nails, which greatly improved the yield of porcelain. The fire mirror is a piece of glaze installed near the firewood hole. When the temperature cone is seen to have softened and bent, a long iron hook can be used to pick out the fire mirror, and the finished porcelain can be seen after cooling.