Jing Ke and Ying Zheng, the king of Qin, are both real figures in history, but they are not seen in the history of Qin, and they are also historical figures, and more than one person calls her, the most famous of which is Shi Yiguang, the first of the four beauties.
The original novel probably borrowed this beauty setting, but Li Ji seems to have talked with Jing Ke and Ying Zheng about a love triangle that spans time and space. So, watch TV. There is no Gongsun Li in the official records! The above is for reference.