There are three small circles on the bronze lid.

This is the decoration on the cover.

The decorative patterns on bronzes reflect the ideology of a certain era and class. As a decorative art, it is also unified and coordinated with the modeling of objects.

The carrier of bronze culture is bronze ware made of bronze. In ancient times, it was made by a very special process (now called bronze casting process), and bronze ware became one of the carriers of ancient splendid civilization.