At the turn of the Song and Yuan dynasties, the young Lu Zhao crawls out of a mountain of corpses, clutching half of a bloodstained jade pendant. He is reborn at a pivotal turning point in his fate. The various factions see him as a pawn: the Southern Song court wants to use him as bait to hold back the Yuan army, Yuan nobles want to install him as a puppet ruler over the Han people, and others intend to use his blood to stain the dragon throne and complete an ancient sacrificial rite. Drawing on his memories from his previous life and the unexpectedly acquired “Jade Pendant System,” Lu Zhao turns the schemes of this chaotic age into digitized missions, advancing cautiously at every step. The System converts abstract matters of strategy, human nature, and imperial favor into quantifiable missions, affection levels, and points, offering him a clear and efficient path to survival. Before the Yuan army marches south, Lu Zhao must uncover the mystery of the jade pendant and find a way to survive amid the warring factions. He is no longer simply relying on memories from his previous life to exact revenge. Instead, he becomes a coolheaded, rational “player,” carefully laying plans according to the System's “missions,” such as winning an emperor's attention or exposing an opponent's conspiracy. His impulsive, fiery nature from his previous life transforms into the decisiveness and careful strategy of a master schemer. The story follows a cycle of “System mission, execute a plan to break the deadlock, claim a reward, unlock higher permissions.” At its heart is the fierce clash between a protagonist armed with modern, data-driven thinking and the entrenched interest groups of a feudal age in chaos. As truth and power intertwine, Lu Zhao stands atop the city wall and smiles faintly. Since everyone in the world loves setting traps, let us see who ends up locking whom inside this prison of splendid mountains and rivers.