Description: Before the last Christmas before the millennium. On December 13, 1999, in the green carriage, the slanting sunset hit his face, bringing him back to reality. The whispers of the girl in the dream gradually faded away in his heart, leaving only his long-term records recorded in his diary. As the sound of the last wheels crushing the rails ceased, the young Cheng Feng returned to Mocheng, the hometown he had been away for three years, that evening with a letter that recalled memories that should not have existed. This work is a plot AVG produced by the fan production group 2ndRevelation. It tells the story of the protagonist Cheng Feng who was involved in a serial murder case after returning to his hometown.