The image shows a black metal object, which appears to be a dagger, displayed in a glass case. The object is made of metal and has a curved shape with a pointed tip. It is resting on a white surface and is displayed on a black plaque with Chinese text written on it. The text on the plaque reads "A dagger with the inscription of the word "zuo hang" of the Period of Warring States (provided by Hebei Research Institute for Cultural Heritage).