Lighting the Way for the Prime Minister (Transmigration)

Su Xianjin is a senior university student with few hobbies, spending most of her free time in the library. Her parents expect her to pursue graduate studies, and she plans to comply. Her roommate, Chen Qing, strongly recommends a novel titled Endless Moon, which Su Xianjin reads despite her usual disinterest in fiction. The story centers on Qin Shi, a noble-born hero whose family is destroyed by court corruption, and Cheng Yun, the young Prime Minister who rises from suffering to become the regime’s most feared antagonist. Cheng Yun is portrayed as a ruthless tyrant who silences dissent and slaughters loyal ministers, yet the novel’s final chapter reveals his true motive: he seeks to dismantle a hopeless dynasty to build a prosperous future, ultimately dying before dawn. Intrigued by this complexity, Su Xianjin falls asleep and finds herself transported into a windowless, candlelit stone chamber. There, she encounters Cheng Yun, who initially attacks her before she vanishes. Upon waking, she dismisses the event as a vivid nightmare.

However, the boundary between reality and the dream world begins to blur. Su Xianjin receives an art book of Endless Moon as a birthday gift from Chen Qing, featuring an illustration of Cheng Yun that matches the man from her dream. She discovers that objects from the dream, such as her hair tie, appear in her physical dormitory, proving the connection is not merely psychological. The dreams become recurring and continuous, allowing her to interact with Cheng Yun in his secret underground chamber. Unlike the novel’s depiction of him as a cold-blooded killer, Su Xianjin witnesses Cheng Yun tending to his own severe wounds without anesthesia, revealing the physical and psychological toll of his secret mission. He hides loyal officials in the chamber rather than executing them, preserving them for Qin Shi’s eventual rise. Su Xianjin realizes she possesses knowledge of the plot, giving her a unique perspective on Cheng Yun’s sacrifices.

The core conflict deepens as Su Xianjin learns that Cheng Yun is systematically destroying the Northern Dynasty from within. The current Emperor Yang Sheng is a debauched tyrant who neglects state affairs, leaving power to Cheng Yun. Cheng Yun executes or imprisons ministers who oppose the emperor’s excesses, earning the hatred of the court and the people. He also torments the Crown Prince, Yang Wangjing, by punishing him publicly in the snow to force him to grow resilient. Su Xianjin witnesses these events through her dreams, including Cheng Yun’s confrontation with the officials who block his carriage and his brutal interrogation of Minister Qin Ze, the father of the male lead Qin Shi. Despite his cruel exterior, Cheng Yun’s actions are calculated to weaken the corrupt establishment and prepare the ground for reform.

A key turning point occurs when Su Xianjin successfully leaves the dark chamber and enters Cheng Yun’s study, and eventually his bedchamber. This expansion of her access allows her to observe his private life and his interactions with subordinates like Jing Lin and Minister Yun Qingquan. Cheng Yun becomes aware of her presence and begins to question her nature, suspecting she is not a ghost but something inexplicable. He tests her knowledge, and she confirms she knows his plans, though she refuses to reveal specific plot details to avoid disrupting the timeline. Their relationship shifts from hostility to a tentative understanding, as Cheng Yun recognizes her as an anomaly in his isolated, dark world.

The story direction follows Su Xianjin’s struggle to reconcile her modern identity with the historical reality she is inhabiting. She visits a university professor to discuss the possibility of parallel worlds and considers seeking psychological help, but the physical evidence of the hair tie prevents her from dismissing the phenomenon. Meanwhile, in the Northern Dynasty, political tensions escalate. The death of Minister Qin Ze in prison sparks outrage among the officials, who demand justice. Cheng Yun faces increasing pressure from the court and the Crown Prince’s faction. Su Xianjin’s presence in the chamber becomes a sanctuary for Cheng Yun, offering him a connection to someone who understands his burden without judgment. As the novel’s plot unfolds, she must navigate her role as an observer and participant, aware that Cheng Yun’s path leads to his inevitable demise, yet hoping to find a way to alter his fate.