The Ancient Destroyer Origin was said to have "a destroyed domain every ten miles and a change every three days". The structure of its void was unique, leading many great beings to speculate that there were countless large and small destroyed domains, strung together like grapes hanging in the strange void of the Ancient Destroyer Origin. These domains were under the influence of some unknown power, allowing them to shift in and out of the real world, even replacing one another.
However, not all places in the Ancient Destroyer Origin were like this. In specific time periods, there were fixed areas where destroyed domain "outbreaks" occurred. For example, in the last hundred years or so, the nearest concentration of destroyed domains to Moon City was at Liantai Camp, located in the north-central direction outside of the city.
Over a hundred years ago, it was at the Dylan River Path, which was three hundred miles south of the city.