Why is bronze the most important craft variety in Xia, Shang and Zhou Dynasties? What is its historical significance?

1. Among all bronzes, the number of sacrificial vessels is the largest and the production is the most exquisite. Bronzes in this period are mainly divided into ritual vessels, weapons and miscellaneous vessels. 2. Exquisite craftsmanship shows the creativity of ancient craftsmen. The technology of mud casting, separate casting, combined casting and stacked casting has been very mature. No portrait has been found so far. Many bronzes are decorated with human faces, such as Fang Ding's face and Yue's face, but these faces are not the faces of specific people. More artifacts are the overall image of people. There are inscriptions on tens of thousands of bronzes in Shang and Zhou Dynasties, which are generally called inscriptions now. For historians, it has played a role in proving and supplementing history.