"That was about thirty years ago, before then, most Undead produced their own necessities of life, building their own houses, making their own furniture. But as you know, the Undead don't need much to live on, and these needs are easily met. As the variety of crops grew and produce became more abundant, everyone's lives gradually improved. At that time, if we continued to toil like before, it would cause great waste, so signs of idleness began to appear among us." Shiela climbed the stone staircase, holding an oil lamp fueled by black potato oil to illuminate the way for her guests, casting long shadows on the dim staircase: "This wasn't a good trend, but it's a necessary phase in the development of a race, and Undead would gradually learn to trade with one another, thereby generating a desire for a better life."