In this chapter, we learn that the only way to find innate energy stones is to dig into the deepest part of the mines, where fierce beasts dwell. This is because the god-sea realm cultivators are weaker than those from the lower world, and they have a better chance of survival. So, if you're going to dig for these stones, you've got to go deep into the mines. The middle layer of the mine contains only low- and medium-grade stones, and the lower layer contains only high-grade ones. This means that the deeper you dig, the harder it is to find the highest-grade innate energy stone. But if you dig deeper into the middle layer, you find a pile of high-graded stones. The only problem is that the hole is too narrow, so they'll have to split it up.