What you want to ask is what are the three-dimensional small circles on the bronze cover? This is a gobang pattern.

Julian pattern, also known as "Julian pattern", is a strip pattern made up of several small circles arranged horizontally, and it is one of the earliest patterns in bronze ware. In Erlitou period, the belly lines of copper Jue and copper _ appeared, which were popular in Shang Dynasty and often used as boundary lines.