The image shows three artifacts displayed in a display case. On the left, there is a shell knife with a pointed tip and a small hole in the center. The shell knife is made of a light-colored material with a rough texture and appears to be old and weathered. Next to it, there are two smaller pieces of stone, one is a stone spade and the other is a smaller one. All three artifacts have Chinese characters written on them, which translates to "Bang" and "Shell knife". The background of the display case is a beige-colored surface.