The artist has an extraordinary and extensive image memory, and the images of many things and their differences interest him. In this regard, Stravinsky has such a passage in Six Lectures on Music Poetics: "Whether a person is a real creator can be measured according to his ability to find noteworthy content in the most ordinary and ordinary things around him. What he cares about is not necessarily the beautiful scenery, nor does he need to surround himself with rare treasures, nor does he need to search hard for anything. Ordinary things and ubiquitous things will attract his attention. The most common things will interest him and become a guide to his work. " This passage is quite right.