The whole ancestral land, which is about 100000 meters higher than the outside world, is a black land. In the whole ancestral land, it seems to be a landform, on which is a place with various holes, or like a valley.

one valley after another is not deep enough. The sky can't see a building on the ground. It seems that the powerful people in the magic machine Valley live in those valleys.

nine elder sisters explained on one side, "the ancestral place of the magic machine Valley is also called the valley of hell. Each valley is more than 100000 meters deep. It is said that it was the...