He died suddenly at a design firm in his past life, and now transmigrates as a dock laborer in Dajing. Civil engineer Liang Shuo relies on his hardcore construction knowledge, starting with slope revetments, improving rammed earth, firing blue bricks, reinforcing city walls, and managing floods, steadily gaining a foothold. Ordered to the capital, he repairs the imperial palace, dredges the canal, builds royal granaries and the Altar of Heaven, and travels north to the border to erect an iron-blooded fortress. As a commoner artisan, he establishes national construction standards, ultimately wins the emperor's trust, and becomes the 'hidden cornerstone' supporting the vast land. A hardcore counterattack story of changing an era with craftsmanship.