Su Chen was demoted to Lingnan and took over a seemingly ordinary murder case in a strange and remote place. After autopsies, turning over papers, and checking household registration, we gradually discovered that the cocoons on the hands of the "deceased" were in the wrong position and that his identity was questionable, and then the existence of the "Ghost House" system was discovered. At the end of the volume, we first visit the Zhou family farm and encounter the head of the Zhou family head-on. This volume focuses on establishing the world view and laying out suspense. The hook is: How many "ghost households" are there in Lingnan? What is buried in the back mountain of Zhou's farm?