Pictures are a kind of visual medium that convey information, express emotions or attract the audience’s attention by presenting images. Pictures can convey information and emotions through color, composition, contrast, clarity and other aspects. Pictures play an important role in cultural communication, advertising marketing, news media and other fields. In literary works, illustrations can help readers better understand the text content. In scientific research, pictures can help researchers better present experimental results. On social media, pictures can enhance the attractiveness and sharing value of posts. In short, pictures have become a very important communication medium with their visual effects and ability to convey information.