"Dragon Kiln" is generally arranged in a straight line along a hillside, with partition walls and flue between kiln rooms, which has high thermal efficiency. It is an energy-saving kiln with short firing cycle and the highest firing technology. As a mature technology, "Dragon Kiln" appeared in ceramic firing in Song Dynasty, but it was not found in brick firing, which is a big mystery. If the "Dragon Kiln" was discovered in Banchangyu, then this discovery is of great significance in China and even the whole world. There are abundant coal resources here. If it can be found that the Great Wall bricks are fired with coal as fuel, that is, one layer of coal and one layer of bricks, it will be an unprecedented archaeological discovery in the history of architecture. Where there were kilns in ancient times, there were often wells. Archaeologists will pay attention to the discovery of ancient wells when excavating brick kilns.
Kiln firing has a long history of more than 2,000 years in China, and it is a very important production technology in history. Therefore, such a large-scale and well-preserved excavation of the brick kiln of the Ming Great Wall is not only of great historical significance and scientific value to the study of the architecture and building materials of the ancient Great Wall, but also of great significance to the study of the development of ancient production technology in China.