The image is a schematic diagram of casting ancient bronze drum. It is displayed on a white wall with a brown border and has Chinese text written on it. The diagram is divided into six sections, each with a different illustration. 

The first section is titled "Schematic Diagram of Casting Ancient Bronze Drum" and shows a series of illustrations of different types of casting materials. The illustrations are arranged in a grid-like pattern, with each illustration representing a different type of casting material.

In the second section, there is an illustration of a drum with a circular base and a curved top. The drum is shown in black and white, with a detailed design on the top and bottom. The illustration shows the drum in various stages of casting, from the initial shape of the drum to the final product. The text on the diagram explains the different materials used in the casting process and how they interact with each other.