Reconstructing the trade history: provenance study of Han bronze mirrors in and out of Han China

Wang, Xiang; Liu, Ruiliang; Gao, Jun; Pollard, A. Mark; Fan, Anchuan; Huang, Fang; Li, Ruiliang; Zhang, Shixuan; Hua, Fenglin; Jin, Zhengyao

Reconstructing the trade history: provenance study of Han bronze mirrors in and out of Han China

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Journal article

Creator (person)

Wang, Xiang

Liu, Ruiliang

ORCID

Gao, Jun

Pollard, A. Mark

Fan, Anchuan

Huang, Fang

Li, Ruiliang

Zhang, Shixuan

Hua, Fenglin

Jin, Zhengyao

Date published

July 2024

Abstract

A rapidly increasing number of bronze mirrors dated to the Chinese Han dynasty (202 BC – AD 220), known for their unique decorative patterns and highly developed alloying techniques, have been widely discovered in both China and beyond, providing fresh materials and scientific data to revisit their geological provenance, production and circulation network along the ancient Silk Road. In this paper, 47 bronze mirrors unearthed in the southeastern provinces of China, including Zhejiang, Anhui and Fujian provinces, have been characterized by typo-chronology, lead isotopic analysis, compositional analysis and metallography. A much wider comparative study is also carried out through a combination of data from China, Japan, Central Asia, and Southeast Asia, leading to a more updated lead isotopic database of the Han mirrors spreading out of China in various directions. Compared with the traditional ‘optimal’ model based on the Han mirrors recovered in Japan, the current study contributes several key changes in the bronze mirror production of the Han dynasty. The systematic analysis of the alloy composition, trace elements and typological studies shows that the bronze mirror industry shifted towards a more standardized production in the middle to late Western Han Dynasty. In contrast to the substantial change of non-mirror bronze productions, the similar distribution of lead isotope data in early and middle to late Western Han mirrors suggests that the ‘official monopoly of salt and iron’ policy was less effective for the management of lead involved in mirror production. Bronze mirrors dated to middle to late Western Han discovered outside Han-China, such as Japan, Thailand, Afghanistan, Xiongnu and the ancient Dian Kingdom, appear to be subjected to a more specific type of lead as a result of the state-centralized policy of the Western Han court.