The Doctor of History Dressed as Fusu and Stopped Me from Killing Myself at the Beginning.

Traveling to Fusu, I will let Great Qin live another five hundred years! Zhang Yan, a doctor of history, accidentally traveled through time while excavating the Mausoleum of Qin Shihuang and became the young master Fusu who was about to die. Zhao Gao usurped the edict? Hu Hai ascends the throne? Doesn't exist! In this life, I will personally reverse the destiny of the Qin Dynasty. Accept Han Xin and Zhang Liang, and turn future enemies into pillars of your command; Make stirrups, modify plows, and use modern knowledge to ignite the scientific and technological revolution; The Qing emperor sided, the court was stable, the world was governed with benevolence, and Xiaoxiao was frightened with an iron fist. When the Xiongnu cavalry went south again, they faced the invincible Qin army that was well-equipped and advanced in tactics; When the remnants of the six kingdoms were secretly stirring up trouble, they discovered that people's hearts had already returned to this different "Qin II". Let's see how Fusu creates eternal peace and lets the Great Qin Dragon Flag fly at the top of the world forever! —————————— No system·Hard-core political strategy·Rejuvenating the country through science and technology·Striving for hegemony From being on the verge of death to dominating the world, every step is a crushing battle of wisdom and strength!