This article borrows the background of Mingyue in the Qin Dynasty and is considered a fan. But since His Majesty the First Emperor is a person who cannot be toyed with, the King of Qin in it is only Zhao Zheng, not Ying Zheng.
And because Zhao Zheng looks too young in it, and to fit the setting of this article, the time of King Qin's death and the time of Jing Ke's assassination of Qin were advanced ten years.