Have you ever heard of Time Traveler? They are people who travel in various worlds. Legend has it that they can go back to the past and predict the future. They have super high IQs and the strength to crush everyone in the world. They usually do not deliberately reveal their identities in front of others, but they have one thing in common - they are all children between 8 and 10 years old. They all share a beautiful and cruel secret. Until, the little girl An An also became a time traveler... Ps: This is my first time writing a novel, so I might not write it well.