The image shows a display case with a collection of different types of rocks and minerals. There are nine rocks on the display case, arranged in a grid-like pattern. The rocks are of different sizes and shapes, with some being larger and some being smaller. Some of the rocks appear to be rough and uneven, while others are smooth and polished. There is a large rock in the center of the display, which is a dark brown color and has a rough texture. On the left side of the image, there is a smaller rock with a smooth surface, and on the right side, there are several smaller rocks scattered around it. All the rocks have green labels with Chinese characters on them, which likely provide information about the rocks.