收藏: Longquan Celadon
Longquan Celadon began more than 1700 years before and reached its peak in Song Dynasty of China. It is one of the historical famous celadon kilns with the longest firing age, the widest kiln site distribution, the highest product quality requirements, the largest production scale and the largest export range in the history of ceramics in China and world.
One emperor of Song Dynasty ordered the makers to produce a kind of celadon with the color of sky after raining between the clouds. That order has been developed a series of Celadon by the feeling to comfort user's heart inside by color.
More technical details of Longquan Celadon is here in English. https://en.wikipedia.org/wiki/Longquan_celadon