The image is a photograph of a white sign with Chinese characters written on it. The sign is titled "Bronze yan" which translates to "The structure of the yan". Below the text, there is a black and white illustration of a traditional Chinese pottery vessel, which appears to be a large, cylindrical vessel with a handle on one side and a spout on the other. The vessel is decorated with intricate patterns and designs, and there are two smaller illustrations on either side of the vessel. The background of the sign is plain white, and the text is written in black.