The level of copper metallurgy in the Ming Dynasty was high. The output and consumption were both vast. For example, during the Yongle period, the golden dome built on Wudang Mountain, Hubei, was 5.54 meters high, 3.15 meters deep and 4.4 meters wide. All its components were prefabricated with copper; the Huayan Bell in Juesheng Temple cast with copper in Beijing weighs 46.5 tons. Copper cense burners produced during the Ming Dynasty Xuande period (AD 1426-1435) was called Xuande burner, also known as Xuan burner. Emperor Xuanzong of Ming Dynasty, Zhu Zhanji, believed that the rituals used in the ceremony at that time were inconsistent with the ancient system, and ordered the Ministry of Works to examine the shape of the rituals in Qin and Han dynasties and structures of the Song porcelain made in the Guan, Ru, Ding and Ge kilns. The Xuande burner is popular among people because of its high-quality copper, simple and unsophisticated shape, and the timeless style. They are mostly brown, purple, etc. The burner pictured is made of good copper, with an elegant style and cloud pattern on the surface, bearing an inscription meaning “Made in the Xuande period of the Great Ming.”