The train station, Platform 13, a train starting with G, a young man with anxious and nervous expressions, and a couple not far away from the young man and a boy of eleven or two, at this moment, they were standing next to the train, as if waiting for someone, the young man named Cao Desheng, a 16-year-old boy who just graduated from junior high school three days ago, and a couple standing near him were Desheng's parents. As for the little boy, he was Desheng's younger brother, Deli