Qin Terracotta Army

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Terra-pit unearthed bronze weapons sword,spear, spear, machetes, and a large number of Nuji, such as the arrow According to the test data indicate that these Cu-Sn-Cr alloy steel after treatment, although buried in the Lane buried more than 2,000 years, front edge is still sharp, glittering show was already high metallurgical technology can be regarded as the world's metallurgical history of the miracle .