On a foggy night, seventeen vehicles piled into a chain-reaction crash. Technician Cheng Yan stood in front of the first refrigerated truck and calculated that it had been stopped for four minutes and seventeen seconds. Team leader Wei Guoan had already written up the case as a fatigue-driving accident. Cheng Yan used the positions where fragments of the brake light had fallen and the wear on the seventh notch of the towline to force him to cross out those four words on the spot. But four knife-like scratches on the dashcam card showed that someone had arrived first. The lights of Antu Rescue had already cut through the fog.
