"The deepest part of the mine is about twenty meters, but the main areas are around ten meters. As for the length, it's hard to calculate, probably more than a li? Myths tell of great dangers lurking deep underground, home to demons and specters. When these evil creatures attack, torches and oil lamps would inexplicably extinguish, plunging everything into darkness. Miners would then, in the dark, have their vitality drained, their complexions flushing cherry red, and they'd inexplicably collapse dead without a single wound. Even if they were fortunate enough to be rescued, the ebbing of their life force would leave them insane or demented."
"Digging further could easily anger the Earth Mother Goddess, bringing tremors and collapses. Therefore, the miners never dared to dig too deep, afraid to disturb the demons suppressed beneath the earth, or incur the wrath of the Mother Goddess's majesty..."
