Zhang Duan was once a genius of the sect. When he was eighteen years old, he refused to forge forbidden evil weapons for the elders, so his meridians were disabled and he was expelled from the mountain.
When he returned to the blacksmith shop left by his father, he couldn't even hold the hammer firmly. Within three days, the town's creditors would come to seize the shop.
Among his father's belongings is a rusty iron seal. The night he touched it, a crack formed in Zhang Duo's palm - he gained a strange ability: he could "see" the veins, flaws and soul inside the iron tool.
But at the same time, with every deep use, his vision permanently deteriorated.
He spent three days, a piece of legendary Xuanxin Iron, and a newly made kitchen knife - cut off the creditor Zhao Hu's Baili Steel Knife. The whole town watched.
Word spreads that the crippled genius is back. The sect that expelled him from the sect back then also traced his whereabouts.
On the way to being forced to leave the town, Zhang Duan gathered three craftsmen who were also stepped on at the bottom: the cook at the stove, the stubborn old man who planed wood, and the young painter who painted illusion scrolls. Four people, four craftsmen, heading west - to the legendary lost holy city of craftsmen, "Baigong City".
He doesn't know the secret of his bloodline. I don't know that the iron seal is engraved with the real name of the last "casting god" in ancient times. I don't know that the three hundred and sixty lines once had their own gods, but they were strangled by the practicing sects ten thousand years ago.
He knew only one thing: the world said craftsmen were inferior. But he can hold a hammer in his right hand. He wants to use that hand to get an explanation for all those who hold tools in the world——
Three hundred and sixty lines, a true immortal will emerge from every line.
