In the border state of Shazhou, the lives of craftsmen are like straw. Xiao Yuan witnessed his father being executed in the street by the army and struggled to survive in purgatory with the broken "Tiangong Fragment" in his arms. The Beidi cavalry broke through the city, and the Hanmui Road became the final dead end! Shi Meng, a friend and relative who had lost his arm, burned his remains just to protect him and Su Jin, who was poisoned by the strange poison that corroded the veins and covered in ice blue, and fell into the dark mine that devoured life.
The fire lizards are like a swarm, and the overlord of the mine is furious! Death follows us everywhere. In a desperate situation, Xiao Yuan held saltpeter in his hand and turned into frost with his quick wit, freezing the fatal poisonous wounds! His rudimentary skills ignited his dormant craftsman soul - a creation made by heaven, capable of controlling water and fire, and capable of hundreds of weapons, which is the foundation for the survival of the human race!
The rusty iron chain is used as a shackle, and saltpeter cold powder is used as a blade! The wisdom of ants shakes giant beasts! The remnant soldiers of the border army cleared the way with blood and fought for a glimmer of life. At the end of the abyss, the icy blue light is like a star - the Eye of Cold Marrow, the way of life that Su Jin paid for with his life, is also the key to unlocking the poison and gaining a glimpse of the secrets of ancient heavenly craftsmanship!
After escaping from the mines, Shazhou became a scorched earth, and the shadow of the Beidi Royal Court shrouded Dayin. The poison that corrodes the veins is not an isolated case, and the power of the cold marrow attracts covetous attention from all quarters. In front of the dilapidated craftsman's furnace, Xiao Yuan held the remaining scroll tightly.
From repairing crossbows and weapons to rebuilding the backbone of the frontier army!
From saltpeter refrigeration to save lives, to lava turning into rivers and machines turning into cities!
From a humble craftsman's apprentice to a pioneer holding the sacred fire of heavenly craftsmanship!
He used craftsmanship as firewood to ignite the glimmer of light in the last days. In the front, there are Beidi cavalry, treacherous sects, and dynasty strife. In the back, there are ancient behemoths, the source of corroded veins, and the secret of a lost civilization. In a world that is collapsing, can the humble craftsman Xiao Yuan use the fire of heaven in his hand to burn away the darkness and build an eternal city that belongs to the human race...?
