Abstract A large number of Yue style bronzes with regional cultural characteristics were unearthed in Hunan, which is of great significance for studying the cross-regional circulation of bronze technology and metal resources in the south of the Yangtze River during the Late Bronze Age (8 ~ 5 C. BCE) in China. In this study, 30 Yue style bronzes and 3 Chu style bronzes unearthed from five regions in Hunan Province were analyzed for chemical composition, metallography and lead isotopes. The results show that the alloy materials of Hunan Yue style bronze ware are diverse. The containers are mainly leaded tin bronze, with both tin bronze and copper. The weapons or tools are mostly tin bronze, and the alloy composition is primarily tin. The lead isotope ratio analysis results showed three main ore sources: polymetallic deposits in the Nanling Mountains, the eastern Hubei-northern Jiangxi metallogenic belt and the western Henan Qinling-Dabie metallogenic belt. The extensive source of minerals reflects the frequent trade of metal resources between Yue people and the Chu state, which is not only the economic basis for the close relationship between Hunan Yue people and Chu State but also an important driving force for the southward expansion of the Chu state and national integration in Hunan.
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