Whose Train Uses Flesh and Blood as Fuel?

Yuan Jin, a sophomore at Pheasant University, is tired of the same old life. On the first day of summer vacation, my grandfather, whom I had not seen for a long time, left a will and left his inheritance to him, the sole heir. At first, Yuan Jin just thought it was an old house that no one wanted. It wasn't until he saw the train tracks extending into the gray wasteland with his own eyes, and the engine pulsating that it needed flesh and blood to nourish it, that he realized the wonders in the shadow of this world. Using cheap flesh and blood to travel back and forth, he brought back the relics of the other world from the fragments of the world, but he did not notice the growing appetite of the train and the strange changes in his original world. It wasn't until the distorted shadow climbed up the real street along the railroad tracks that Yuan Jin understood: This was not an inheritance, but a contract mortgaged with flesh and blood.