Liu Chuan, an internet writer who graduated from a third-rate university, died suddenly after coding continuously for 72 hours in a rental house in the provincial capital. When he woke up, he was lying under artillery fire outside Beijing in March of the 17th year of Chongzhen. Li Zicheng was injured by the red cannon and fell off his horse, and his soul happened to be filled into this body.
There is no system, no cheats, no superpowers. His only weapons are the historical knowledge accumulated in his mind from hundreds of time-travel novels and the obsession that "now that we're here, we can't let history repeat itself."