Lee Hyoungjin majored in Visual Design at Seoul National University and has worked as a children’s book illustrator since 1990. The books written and illustrated by Lee include Kkeutji, Myeongae & Darae, The Little Seed, The Mother Cuckoo and The Path Through the Forest. Books planned and illustrated by Lee include the Integrated Knowledge series. Books illustrated by Lee include The Schoolchild Made the Cycle Path, Cat, The Five Brothers of Talent, Didn’t You See My Spotty Pattern?, Pride, My House's Electricity Theft and The Three Sibling Rice Seeds.