Qin Chuan, a genius with degrees in two engineering fields, accidentally transmigrates into Hu Hai, the Second Emperor of Qin. Faced with Zhao Gao’s usurpation of power, the revival of the Six Kingdoms, and the Xiongnu at the borders, he confronts the darkest of beginnings. Drawing on his modern knowledge of chemistry, military affairs, agriculture, and other disciplines, he advances carefully through plots and warfare. He uses fireworks to cow the powerful ministers and wields Yang Lie as a blade to break through the impasse. He gathers the talented Ying Ling, Su Wanqing, a flower-famed courtesan and secret agent, and Gongshu Yao, a mechanical genius, to build an “against-heaven team.” From improving gunpowder and building the Great Qin cement wall to introducing Champa rice and establishing a modern military academy, he uses scientific thinking to reshape Qin law and performance reviews to reform the bureaucracy. He even lays the groundwork for a “constitutional monarchy,” breaking free from the constraints of history. Amid heated court debates, bloody battles, and a whirlwind of technological progress, he laughs and mocks the ancients for “not having brains enough.” He and Xiang Yu and Yang Lie swing between love and hate, while he and his three beloved women embark on a five-volume journey to defy fate. On the night fireworks illuminate Xianyang, he vows to tear up the prophecy that the Qin will fall after two generations and use the hard-nosed methods of a science student to give the crumbling empire a new and glorious age!