Invincible from the Bottom of the Mine

At the bottom of the fairy world, deep in the mines, there is a miner whose name no one remembers. Before time travel, he had a wife and children, and worked eleven hours a day to make ends meet. After time travel, I was still mining. I spent 17 to 18 hours a day and only had five hours to sleep. Others who traveled through time were wealthy young masters, the darlings of aristocratic families, with golden fingers flying around, but he had nothing. Until he picked up a ring in the deepest part of the abandoned mine. There is a bead embedded in the ring, which is cold and warm, as if it is hiding something. He didn't know that this ring was once a knife that destroyed galaxies. That bead was once a sword that pierced the black hole. He also didn't know that all that was left behind in the war that annihilated thousands of galaxies was in the palm of his hand. He's just a digger who can't hold on anymore. He just wants to survive. But I don't want him to just forget about that ring.