Su He's White Horse is a classic picture book with sales exceeding one million copies in Japan. He has won the highest prize in the Japanese children's publishing industry, such as the Children's Welfare Culture Award of the Japanese Ministry of Health and Welfare and the Japanese Children's Publishing Culture Award, and has been selected into the recommended bibliography of NHK Reading Committee and the selected bibliography of Japan Library Association. This story is adapted from Ma Touqin, a folk story in Inner Mongolia. It has a strong national color and a touching plot with a little sadness. In this book, in order to show the endless grassland, Chi Yuyou adopted a rare large-scale horizontal format, using the "horizon" as the main axis of the set-whether it is a close shot or a distant view, you can see the horizon on the horizon, giving people a magnificent feeling. The works are also very distinctive in the use of colors. In addition to using a large number of shades of yellow and red to express the dryness of the desert, it also reflects the protagonist's mood and destiny with the help of the change of color lightness, and symbolizes the contrast between strength and weakness with the strength of color and the size of composition, so that the story is distinct and rhythmic.