The Five Immortals Hall owns numerous types of mines across countless small worlds within the Ten Thousand Worlds, many of which are extremely difficult to excavate.
For ordinary people, let alone mining, just surviving in these mines is a significant problem, and martial artists with a certain level of cultivation are required.
In general, there is no martial artist who is willing to do this kind of laborious work, so the martial artist miners of the Five Immortals Hall are mostly prisoners of war or slaves purchased from various worlds.
In addition to these, there are also members within the Five Immortals Hall who have violated hall rules.
In some cases, working for five or ten years in the small world mines can barely be endured.
But a hundred years, that would be truly terrifying.
So far, of the prisoner-of-war miners purchased by the Five Immortals Hall, less than one in ten can endure over a hundred years in the mines.
