At the end of the Warring States Period, the Zhou Dynasty was in decline, and the seven kingdoms were fighting for hegemony and wars continued. The Qin State has gone through Xiaogong's reform, King Huiwen went eastward, and King Zhaoxiang encroached on the six countries. By the time Yingzheng came to power, it had the absolute strength to unify the world. At the social level, the well-field system collapsed and feudal private ownership of land was established; culturally, Legalism dominated the state affairs of the Qin State, and the lingering influence of various schools of thought still existed; in terms of folk customs, the Qin people worshiped martial arts and worshiped meritorious deeds, and traditional customs such as worshiping ancestral temples, Nuo dances to drive away evil spirits, and spring plowing of family fields were prevalent. The life boundaries between nobles and common people were clearly defined, and the people at the bottom suffered from wars and corvee labor.
The Great Qin Xianchen auxiliary system is an auxiliary tool based on the heritage of Chinese civilization and with the core of "assisting the wise king and stabilizing the world". The system binds the time traveler Zhao Yan, and the activation condition is that Zhao Yan makes a blood oath to "loyalty to Yingzheng and protect the Qin Dynasty".