"All ancient texts record that there are great terrifying entities deep underground. Although this place is a blessed paradise, its subterranean structure should be similar to the world we inhabit. Surely we won't be so unlucky as to dig one up? At a depth of several hundred feet, there shouldn't be any such risk..."
By the time they had dug to a depth of five hundred feet, the surrounding temperature was extremely high—enough to melt ordinary granite—and even Yelin was about to give up, when one of the miner spirit insects called out excitedly.
"Master, I've dug up spirit stones! It seems there's no more Dark Steel!"
Chapter 118