Da Qin: What Should I Do If I, Fusu, Start Badly?

I just traveled to the Qin Dynasty, but found myself as Fusu, the eldest son of Yingzheng! Many years ago, due to political disagreements, he was demoted by Zulong to supervise the army in Shangjun, where he built the Great Wall to resist the Huns. But at this time, it was already the thirty-seventh year of the Qin Dynasty! Ancestral Dragon Ying Zheng will die suddenly in the sand dunes during his last grand tour of the world! Next, Zhao Gao teamed up with Hu Hai and Li Si to usurp the throne, and issued a false imperial edict to force himself to death. Is it cool just after traveling through time? ! In order to survive, Fusu made an immediate decision! Lead the 300 Great Wall Army to leave Shangjun overnight and go to Zulong to prevent Zhao Gao from harming him! But I didn't expect that the system would awaken halfway! Self-rescue turned into rescuing others, and Zulong was rescued by Fusu when he was about to die. Since then... Ying Zheng: I think our territory of Great Qin is still too small. Liu Bang: I feel like I have always lived in the shadow of Fusu. Xiang Yu: The woman next to Fusu is called Yu Ji? Why does it feel so familiar to me? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.