The matter that makes up the world we know only accounts for less than 5% of the mass of the entire universe. So where is the other 95% of the universe's mass? What is it like? A soul that travels across time and space accidentally encounters a mysterious and strange shadow world. Tearing apart the bloody and ignorant appearances and dispelling the mysterious and strange fog, evolution and truth unfold before his eyes. P.S.: The original inspiration for this book comes from the American TV series "Stranger Things".

(No rebirth, no heroine, no system, nothing to write about. Please read with caution. Those who hate evil should avoid it.)

Song Qian was originally an honest child, but he became unruly after picking up a small, tattered book.