·Protagonist: Zhao Huan (the historical prototype is Song Qinzong, but here he is a time traveler). He was originally a young scholar/engineer in modern times who was deeply interested in history, military, and technology. Perhaps due to an accident (such as electric shock, falling off a cliff, studying antiquities, etc.), His soul traveled through time and possessed a certain prince of Song Huizong (not necessarily the original prince) who had just ascended the throne (or was about to ascend the throne, and the succession order could be changed). He possesses modern knowledge, vision and a strong sense of national responsibility, and is well aware of the humiliating history of the late Northern Song Dynasty.
