My Practice Depends on the System

The age of the demon world: a millennium and a century, and a hundred years in the mortal world are ten years in the demon world. The mortal world and the demon world are two related time and spaces. However, the passage connecting the two realms is very vague, sometimes opening, sometimes closing, sometimes disappearing, sometimes appearing, so it is rarely known. The demon world is divided into bounded areas and realms. In the demon world, there is a weak connection between the various realms, and they can influence each other. The demon race is divided into four types: native, alien, hybrid, and human-refined. One type of monster has many races, one region has one civilization, one area has many customs, and one race has many rules. There are also various weather conditions in the demon world. Chronicle: ancient virtual year, demon current year, demon spirit year, demon repair year, demon transformation year, demon different year, demon first year One Yuan Yang period is equivalent to a hundred years in the human world, and one Yuan Shen period is equivalent to a thousand years in the human world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.