Archaeological excavations in Guangzhou, southern China, have uncovered the earliest physical evidence of brass production in East Asia [6]. Eighty crucibles found in an ancient metalworking workshop by a team led by archaeologist Hongyan Xiao of Peking University are reshaping the region's metallurgical history [6]. This discovery indicates that brass production technology, previously dated archaeologically to the 16th century at the earliest, actually extends back to the Han Dynasty (25–220 CE).
Microscopic Traces in Ancient Workshop
Within the metalworking workshop examined by archaeologists, 80 clay crucibles used in metal smelting processes were brought to light [6]. Precise analyses conducted in the laboratory detected microscopic brass droplets, formed by the combination of copper and zinc, on the inner surfaces of these crucibles [6]. While ancient Chinese written records mention the production of brass alloys as early as the 10th century, these findings prove the technology is considerably older [6].
Technological Legacy of the Han Dynasty
The Han Dynasty period is known as an era of significant economic prosperity and technological advancements in China [2]. The rising new bureaucratic elite class during this period fostered artistic and industrial production, leading to major progress in fields such as metallurgy [3]. The brass remnants found in Guangzhou directly reflect the advanced production capabilities of this era.
Producing brass requires melting copper and zinc at a precise thermal balance. Due to zinc's low boiling point, brass production was a highly challenging craft in ancient times. The findings in Guangzhou demonstrate that artisans of the Han Dynasty were able to successfully control this complex chemical process. For additional sources and further reading that strengthen this context, see [1].
Sources and Further Reading
- [1] News - War Damages Syria’s Archaeological Heritage - Archaeology Magazine
- [2] Han China’s Portable Pigpens and Penthouses - Archaeology Magazine
- [3] Han China’s Portable Pigpens and Penthouses - Archaeology Magazine
- [6] News - Crucibles Contain Earliest Evidence of Brass Production in East Asia - Archaeology Magazine
Image & News Source: Archaeology / archaeology.org