The Primordial Dragon Serpent

We arrived at a new floor, yet again a bit smaller than the one under it. But on this floor, there didn't seem to be anything of note besides the massive pillar in the middle of it. It was a square pillar made of an obsidian-like substance.

Before I could consult the poison god's book, Xi Son hurried towards the stone, trying to pocket it into his pouch but was soundly denied.

"Damn, I can't take it, nor can I refine it for my own use." Xi Son said.

"Pardon my lack of knowledge, what is this?" I asked.

"Huh? I thought you would know; this is a Law Stone. Though this is the largest one I had ever seen. It helps cultivators understand the laws of the world. But on a rudimentary level. This is more like a preparation for when they begin studying Law in order to confirm their Dao and create their Domain."

So many new concepts that I have yet to fully understand but I believe I have the gist of it.