Li Ruqing, who was born in the royal family of the post-Tang Dynasty, accidentally meets the prodigal Qin Chi, and the two travel together in the world. Li Ruqing was burdened with the hatred of his country and his family. Facing the Sixteen Youyun Prefectures and the ruined old mountains and rivers that fell into the hands of Beidi, he hid his sorrow in his heart.