A civil engineer accidentally traveled through time and became the youngest son of Xuzhou Mu Taoqian; when Cao Cao's army came to the city, he did not send food and grass, but instead sent a "Plan for the Integrated Construction of Water Conservancy and Defense fortifications in the Xuzhou Area." With modern knowledge and strategies, recruiting talents, and using infrastructure magic, he turned the troubled times into a large-scale construction site, and finally calmed down the troubled times of the Three Kingdoms and achieved great dominance!
Concept: Three Kingdoms travel, historical derivation