Jang Joon-Young majored in painting at both university and graduate school. She is inspired by the stories found in nature and the various stories of people. She strives to make picture books that warm the hearts of both children and adults. Jang has written and illustrated books such as What Kind of Sound Is This?, There Is a Road, Dinosaur Eggs and a Car, and illustrated What You Did From Sunrise Until Sunset?, My Grandfather Is a Fifteen-Year-Old Boy Soldier, Grandfather Candy Who Shares Love, and Come On!