The author Laperla is seven years old, this is the second book she has published. After the first book "Let's drive away the rain together" published in 2021. The endorsement and encouragement from the readers have emboldened Laperla to keep painting. "Different worlds are fun" is the unique view from a seven years old girl to see the differences in the world and to accept the differences of others. It's a warm-hearted picture book that heals the world.