(Source: www.china.org.cn)
A well preserved warring states sword has been found in East China according to this article:
A copper sword dating back more than 2,200 years has been discovered in east China's Jiangxi Province, local archaeologists said.
The design and shape of the sword indicate that it was forged during the Warring States Period (475 BC - 221 BC), according to Li Guoli, curator of the Nanchang Museum, where the sword is currently being stored.

