A young history scholar who is a modern grassroots civil servant accidentally traveled to the Xiantong period of the late Tang Dynasty (the period of Emperor Yizong of the Tang Dynasty) and became Li Xuan, Emperor Xizong of the Tang Dynasty, who was famous for his "faint entertainment" in history. At this time, we were only a few years away from the Huangchao Uprising that would destroy the foundation of the Tang Dynasty...