The Sporogenesis Mill was not particularly large.
Although this city lay beneath the Razor Domain, it was not the shadow city of the Razor Domain. With a sparse population, a too-large area would easily accumulate a lot of garbage—and it would be very inconvenient whether shopping or dining out.
Moreover, the custom of the Underground City was... the fewer production facilities there were within the residential areas of the city layer, the better.
Below, there were dedicated planting layers and exploration layers for producing various raw materials; transportation and cargo movement in the Underground City were extremely convenient, and the land was vast with few people. This resulted in a severe shortage of labor.
But if there were no production facilities at all, the cargo subway and peddlers would not pass by as frequently, and then various goods and basic materials needed would be in short supply.
Usually, less famous small cities do not have their own names.
