The time traveler Li Chengdao came to Qingguo after the nuclear disaster. His biological mother was weak and died early after giving birth, and he was isolated and helpless in the palace since he was a child. Seeing clearly that the royal family has no family ties, Emperor Qing regards the prince as a pawn, and devotes himself to practicing martial arts to protect himself. He has spent ten years perfecting the Zhenqi sword technique. Today, he has broken through to the eighth level, and his strength crushes the clans of the same age. The deputy commander of Ouchi, Gong Dian, was shocked. Emperor Qing was secretly afraid after hearing the news of the breakthrough, and the undercurrent of seizing the heir was quietly surging.