Gu Changsheng transmigrated overnight, becoming a prodigal son despised by everyone in the capital, but unexpectedly awakened the "Death-Seeking System". Just as he ascended the golden hall to be conferred as the top scholar, the system issued its only mission—propose marriage to a royal woman within an incense stick's time, or heavenly lightning would strike the world! Facing three princesses of noble status, Gu Changsheng avoided all the vortexes of the fight for the succession, turning his target to the peerlessly cold and stunning eldest princess, Li Cangyue. Everyone thought he was crazy, little knowing that this seemingly absurd marriage proposal was actually drawing him into the core of imperial political maneuvering. Relying on defying medical skills, a mysterious cultivation method, and astonishing wisdom, he grew from a prodigal in everyone's eyes into a peerless emperor who suppressed the northern borders and awed the imperial court.