"Do you know that it should be green, fat, red and thin?" The end of this TV is painted by Xueyu. The official did not give more information, but explained that the painter of the long scroll at the end of the film was Snow Fish. Yu Xue was a famous freelance illustrator and author of children's picture books in his early years. Her works have a western decorative style, but most of the themes are related to the legends of the Chinese nation.

She is good at turning a story into a painting full of meaning. Representative works include Dayu's flood control, Cangjie's word creation, floating dust and so on. Most of her paintings revolve around words, but at the same time, they have strong themes and can express the sense of the times well.

There are many illustrations in the title of Know, but the author of the illustrations is not Yu Xue, but a trained illustrator. Although Zhang Yu is young, she has painted promotional films for many films, the most famous of which is the poster of The Wandering Earth.

In addition, the well-known domestic animation "Legend of the White Snake" in Douban is also a poster drawn by Zhang Yu, as well as "Painting the Wall" and The Journey to the West, all of which have pictures made by Zhang Yu. Zhang Yu's paintings have strong color collision and heavy Dunhuang color style, which can also add icing on the cake to the content of TV series.