Lien has illustrated The God of Sleep, a children's picture book written by Lev Grossman and published by Little, Brown Books for Young Readers (March 2026). The book is a retelling of the myth of Hypnos, the Greek god of sleep, and offers young readers aged 6–8 a beautifully atmospheric journey into ancient mythology. Lien's illustrations have already been widely praised for bringing real warmth and depth to this dreamlike story, and the book stands as a wonderful addition to a growing body of work that continues to establish Lien as one of the most distinctive voices in children's publishing today.