During the Zhenyuan period of the Tang Dynasty, Fan Li, the eldest son of the Duke of Longxi County, was frail and sickly since childhood, but harbored huge ambitions. Ten years ago, the stepmother Liu colluded with powerful officials to frame Fan Li's father for treason, and everyone in the family was convicted. Fan Li was exiled to the scourge of Lingnan, and everyone thought he would die. However, ten years later, undercurrents surged in the court, the vassal towns were divided, the eunuchs were in power, and the emperor was seriously ill and had no heirs. At this moment, a mysterious group of Lingnan Yi Cong quietly marched north, led by the young man who was sick and had his bones broken. Fan Li returned with the golden finger "Sick King's Heart Technique" - this technique allows him to control the power of thunder with his sick body, and every time he coughs up blood is a fatal blow. On the surface, he is a sick young man who may fall at any time, but in fact, he secretly plans to annex the powerful, subdue the powerful, and approach Chang'an step by step. The evil stepmother Liu is now a prominent lady in Chang'an, holding the imperial army and supporting the puppet prince. When mother and son reunited, Fan Li sneered: "Mother, in the past ten years, my son has been thinking about how to repay you every day."
