After dying from overwork at a design institute in his past life, he is reborn as a dock laborer in the Great Jing Dynasty. Armed with hardcore civil engineering knowledge, Liang Shuo starts by building retaining slopes, then improves rammed earth, fires blue bricks, reinforces city walls, and tames floods, steadily establishing his footing. Summoned by imperial decree to the capital, he repairs the imperial palace, dredges the canal, builds royal granaries and the Altar of Heaven, and even ventures north to the frontier to construct an iron-blooded fortress. As a commoner craftsman, he sets national construction standards and ultimately earns the emperor's trust, becoming the hidden cornerstone supporting a vast empire. A hardcore comeback story of a man who changes an era with his own two hands.