In the 16th year of Jian'an, Sun Quan moved to Moling to build a capital city called Jianye to suppress the king's spirit in the southeast. Shen Yan, who was born in a craftsman's family, was an out-and-out mud-legged person in the eyes of everyone - but when he turned the ancestral compass in his palm, he could see the mountain shape and water potential, the hidden damage of the dragon's veins, and where the foundation of the former abandoned well was hidden. He could see through what others had done for three days with a stick of incense. This set of ancestral "qi-viewing and construction techniques" allowed him to go from being ridiculed by the northern masters for not knowing "Kao Gong Ji" to becoming the "Eye of Building the Capital" personally recommended by Sun Quan himself. But Soochow engineer Zhang Heng couldn't tolerate the mud legs climbing to the top of his head, jamming materials and orders, and even tampering with the foundation, turning a royal city into a death trap. Shen Yan set the rules with a hammer: "Whose name is left on the brick will bear the responsibility for the craftsmanship!" He uncovered the dark network entrenched in the construction labor layer by layer, and used the blood and sweat of the Shen family's six generations of craftsmen to nail this city into a six-hundred-year history. And the cat "Ali", who only wrinkles his nose at the cold damp soil and the smell of alkali bricks, is always the most effective brick examiner in the book. See how a craftsman uses his craftsmanship to make a name for himself in the chess game of princes and generals.