Skeleton Lords, the Great Tomb and the Industrial Revolution

People need to eat when they are hungry, drink when they are thirsty, and sleep when they are sleepy. From time to time, we have to take vacations and holidays, consider social relationships, and engage in meaningless energy consumption... But skeletons with only a handful of skeletons don't need to care about this. Their existence has only one purpose - to carry hatred for the living, using the dark energy from the shadow plane as their source, to kill everything in sight. However, Li En, who is also a skeleton but has a sense of self-reliance, discovered that the skeleton he awakened seemed different from what was said in the book... "Completely controlled by my will?" "Conversions are also possible." "There is no limit to the number!" ………… Many years later, when factories were built on the once barren tombs, all the mineral deposits in the ground were excavated, and countless tireless skeletons worked in the darkness. Li En knew that the time for free trade had come. Farming+DND