The Age of Steel and Fire: the Reconstruction of the Scientific Tyrant

In 2023 AD, Li Yun, an ancient book restorer, was reborn as Li Jiancheng, the prince of the Tang Dynasty, after touching a blood-stained volume of "Secret Records of the Early Tang Dynasty" - only twelve hours before the Xuanwu Gate Incident. In his last life, he was shot dead by his own brother because of a single thought, and the prosperous Tang Dynasty finally became someone else's wedding dress; In this life, he grasped the blast furnace steelmaking method with his left hand and unfolded the ballistic parabola equation with his right hand.