Zhao Heng used modern mathematical knowledge to help the Qin State improve weights and measures calculations, but was suspected by Qin Shihuang because of his "exotic skills"; he tried to explain to Fusu the modern interpretation of "people are water, and the king is a boat", but was regarded as "deviant and treacherous" by Fusu; during the book-burning incident, he took the risk to hide Confucian classics, but was involved in a deeper palace whirlpool.
In the end, Zhao Heng may have realized that the charm of history lies precisely in its irreversibility. The role of an individual may not be to change history, but to understand history through personal experience - to understand Qin Shihuang's brilliance and paranoia, to understand Fusu's ideals and helplessness, and to understand his own insignificance and luck as an "outsider." The ending can be that Zhao Heng remains anonymous in the troubled times of the late Qin Dynasty, watching history proceed according to its established trajectory, becoming a silent bystander with stories all over his body, leaving readers to think about "history and individuals".
It needs to be emphasized again that these settings are only fictional creations. We should always respect historical facts and understand and learn about real historical figures and events from an objective perspective.
