Linyuan City. A small third-tier city surrounded by mountains. Outside the city are the huge Donglin Detention Center, Qingya Mine and two heavy-duty prisons. The urban economy is dependent on the prison system, forming a unique "prison city economy."
· Family: Ning family. Three generations act like "city gatekeepers."
· Core setting: There is an unwritten rule in Linyuan City - "For big things, go to the Yamen, and for small things, go to the Ning family." The Ning family is not an official, but they control the only dialogue channel between the official and the gray area. They walk on the tightrope of power, and if they slip, they will be shattered to pieces.
