The artist has an extraordinary and extensive image memory. The images of many things and the differences between them are of interest to him. Regarding this point, Stravinsky has this passage in his "Six Lectures on the Poetics of Music": "Whether a person is a true creator or not can be determined by his experience in the most ordinary and ordinary things around him. Measured by the ability to discover noteworthy content. What he cares about is not necessarily beautiful scenery, nor does he need to surround himself with rare treasures, nor does he need to search hard to find ordinary things everywhere. All kinds of things will attract his attention. The most common things interest him and become the guide for his work. "This sentence is very true.