Lan is a kind of energy with a constant amount and attached to obsession. The wave bearers identify each other in the crowd, accommodate the alienated, and maintain a fragile order. Shen Sanshui wore an old watch on his wrist that was inaccurate. The second hand occasionally sounded, but he couldn't tell what it was. After joining the organization, he went through three years of unit tasks - subway derailments, urban silence, execution lists, civil games - everything pointed in the same direction: alienated people everywhere were restless, converging towards a certain intersection, and no one could explain that direction.