Xuande furnace is a kind of furnace cast in Xuande period of Emperor Xuanzong of Ming Dynasty. Its copper material is imported from Siam (Thailand), which is called wind-mill copper, but it is actually pure copper. Xuande furnace is made of pure copper through repeated refining and casting. The surface is not only particularly smooth, but also has some natural markings. According to the difference of casting, it can be roughly divided into five colors, including chestnut skin color, tomato skin color, Li Tang color, brown color, and Tibetan scriptures paper color, among which the mysterious furnace with Tibetan scriptures paper color is the rarest and most expensive. According to historical records, there are different opinions, all of which are distributed in royal temples and palaces and used by some important officials. Moreover, the casting process of Xuande furnace has always been confidential, so in the Ming Dynasty, Xuande furnace was particularly valuable.

In fact, "Xuande furnace" is a general term, which refers not only to incense burners made in Xuande period, but also to bronze furnaces with similar shapes. This is actually easier to understand. For example, "cloisonne" does not refer specifically to the enamel made during the Jingtai period in the Ming Dynasty, but is the floorboard of a unique craft.

According to records, Xuande cast copper furnaces for three years, totaling more than a thousand pieces. At that time, Xuan Lu was not only used by the royal family, but also distributed to kings, courtiers, altars in the suburbs of Beijing and even famous temples all over the country. It is so widely distributed that now Xuande furnaces can be seen everywhere, while the truly orderly ones have almost disappeared without a trace.

There are three main aspects to distinguish the authenticity of Xuande furnace:

1, look at the patina. The real patina is moist and precious, and it will last for a long time. Fakes wither, and some are like paint. The longer they stay, the uglier they become.

2. Look at the foundry. The quality of genuine casters is average, and the quality of fine casters is quite fine. The counterfeiters of counterfeit products are uneven, good and bad, and rough.

3. Look at the wear and tear. Authentic products have natural and even wear, especially the soles of feet. Counterfeit goods have not been worn or artificially polished.