C140 Tortoise essence

Actually, I don't know what kind of monster it is. It's just that the Miasma under the tree is gathering and a fierce wind is blowing, it's obviously because they chopped down the tree just now. However, I was able to discern something from this baleful wind. I said, "The baleful wood is gold, and the tree is wood. There is definitely a lump of metal beneath it. As for what it is, I don't know