Lin Hao, a 35-year-old structural engineer with a debt of 2 million, died on the construction site he designed on the third day after being laid off by his company. When he opened his eyes again, he became a servant of the Qin Kingdom in the Warring States Period. He was pinned under the collapsed city wall. If he didn't escape within three minutes, he would die. Relying on structural mechanics, he calculated the only escape route. With his knowledge of hydrology, he rewrote the lifeline of agriculture in Guanzhong. With construction projects, he allowed Bai Qi's army to cross the river overnight. He possesses five little people one after another, and every time he dies, he leaves an engineering mark in his soul. The five seals gather together, overloading the resonance. Two thousand years later, archaeologists discovered a recurring puzzle in the ruins of the Qin Kingdom - every incredible and exquisite project has the same symbol engraved in the lower left corner...
