The old sewers are constantly expanding.
Occasional collapses, fractures, or dangers cannot halt the outward expansion of the underground kingdom.
Opinions on the existence of the old sewers are mixed. Sociologist Charles Robert believes that a large number of aberrations that recognize "rules" live in the old sewers, and over time, they may not be unlike past beasts that could be tamed by humans.
Another standpoint, lacking academic support but widely accepted by people: aberrations are stronger than humans, smarter than humans, and the only advantage humans have over them is the development of civilization. However, should they embark on the path of creating civilization, they will undoubtedly replace humanity.
The third stance is represented by Lu Li—
Defining humanity is a subjective judgment.
Scholars believe that without reproductive isolation, one is human. So, do those who mutate into Aliens count as human?
