Mortals Counterattack on the Road to Cultivating Immortality

It's not a system, it's not an old man, it's not a space, it's just a piece of iron. Before Lao Zhoutou died, he gave him a black and heavy piece of iron: "This is what your father left behind... I've been looking at it for decades, but it's not famous. You blacksmith, just keep it as an item at the bottom of the box." Shi Jian put it under the anvil for three years. Until one day, he was beaten to a bloody head and lay on the anvil gasping for air. Blood dripped down and seeped into the lines of the iron. He heard a voice in a trance——