Guarding the Border? No, I Built an Empire Beyond the Great Wall

Shen Yue, the chief engineer of modern national key projects, became the humblest concubine in the Dingyuan Hou Mansion in the Dajing Dynasty. On the day of his wedding, he was demoted and thrown into the coldest border town of Anling in the north, becoming the laughing stock of the whole capital. In front of him is the desperate situation where the wind is like a knife and the fields are full of hunger. Behind him is the cold calculation of the Hou Mansion's aunt and brother. Shen Yue touched the remaining half of charcoal in his arms and looked at this wasteland forgotten by the world - the red soil is rich in iron ore, the black rock formations are buried with coal lines, and the scattered stones are low-grade ores. Resources are at your feet. He gathered all his sharp edges and drew the first sketch that changed the world in the dilapidated Earth Temple: a home-made coke oven that could produce high-quality coke, a steel-filling method that turned bad iron into refined steel, and a curved shaft plow that stunned old farmers. Three months later, the first coke fire in the frontier fortress illuminated the snowy night, and the hot molten iron poured out the toughest steel of this era. A year later, Anling County's granaries were overflowing, militiamen were armed, caravans were on the road, and a terrifying "steel border city" emerged in the wasteland. When Beidi knocked off the pass, what they encountered was a city wall wrapped in steel plates and unheard of city defense machinery. The envoy from the capital arrived with an autographed letter from the Marquis stating that he had "returned from his lost ways" and a marriage letter from a noble daughter of a noble family to "restore the old relationship". The city gate made of hundreds of refined steel slowly opened, and a huge slogan hung high sounded in the wind: [This is an important place for technology research and development. My father and dogs are not allowed to enter. This is an engineering brain's dimensionality reduction attack on the feudal era. While others were still fighting for power and playing tricks, he silently opened the entire technology tree.