Craftsmen add firewood into kilns and observe the celadon wares' color temperature at the Zeng's ancient celadon kiln in Longquan City, east China's Zhejiang Province on Nov. 15, 2007. The city, famous for Longquan celadon which was originated in the Five Dynasties (907-960), boasts a history of over 1,600 years to produce celadon wares. Celadon from Longquan kilns is sparkling, pure and as perfect as jade, and Longquan celadon is the largest kiln family in the Chinese celadon history. (Xinhua Photo)

Zeng Huanming, the 6th inheritor of the Zeng's kiln, holds a newly-sintered celadon vase in Longquan City, east China’s Zhejiang Province on Nov. 15, 2007. The Zeng's is the only kiln to fire celadon wares entirely following the traditional techniques in the province. To keep the quality of celadon wares, the Zeng's produced just two batches of celadon wares a year from its ancient kiln. They started to fire its second batch of products this year on Nov. 15 at the kiln, which has a history of more than 200 years. The celadon wares from Zeng's kiln have been collected by the artists and collectors of home and abroad. (Xinhua Photo) Craftsman Li Jiding brushes a kind of anti-adhesive liquid onto the containers holding biscuits at the Zeng's ancient celadon kiln in Longquan City, east China's Zhejiang Province on Nov. 15, 2007. (Xinhua Photo) Craftsmen add firewood into kilns at the Zeng's ancient celadon kiln, which is 32 meters long with 22 sections, in Longquan City, east China's Zhejiang Province on Nov. 15, 2007. (Xinhua Photo) Craftswoman Wu Shengzhen works on the biscuits at the Zeng's ancient celadon kiln in Longquan City, east China's Zhejiang Province on Nov. 17, 2007. (Xinhua Photo) Zeng Huanming, the 6th inheritor of the Zeng's kiln, worships the god in charge of kilns in Longquan City, east China's Zhejiang Province on Nov. 15, 2007. (Xinhua Photo) Craftsman Li Jiding examines a biscuit at the Zeng's ancient celadon kiln in Longquan City, east China's Zhejiang Province on Nov. 15, 2007. (Xinhua Photo) Collectors go to the Zeng’s ancient celadon kiln to choose celadon wares in Longquan City, east China’s Zhejiang Province on Nov. 15, 2007. (Xinhua Photo)