1. Identity of the protagonist: Lin Yan, a graduate student in the Department of Modern History, majoring in the history of the Three Kingdoms. Due to a laboratory accident (contact with a bronze mirror with remnants of ancient battlefields), his soul traveled to the end of the Eastern Han Dynasty (189 AD, the death of Emperor Ling and the eve of Dong Zhuo's arrival in Beijing). He became a descendant of a declining gentry on the border of Bingzhou. He had no military power or influence, and only had a library and a few old servants.
