"Summer" is one book in "Cao Wenxuan Painting Library" from the famous children's literature writer Cao Wenxuan. His writings have always been dedicated to the faith of beauty. The painter of this book is Yu Rong, a British Chinese young artist. She used Chinese traditional paper-cut and international creative vision to express her works. In the hot summer, a group of animals eagerly sought shade in the great wilderness. In order to fight for a tree, the animals quarreled and fought. In the end, the elephants won. But when they looked back they found that it was a tree that was almost dead, with only a few branches with one or two drooping leaves. Just then the animals saw a father and son crossing the moor. In order to give the child a shade, the father with his body shadowed the skinny son. What would the animals who see this scene do next?