The one who discovered the Second Prince of Dark Demon was a fisherman of the Boundary River.
The Plane Boundary River, despite being called a river, is not exactly a river in the full sense.
The Boundary River is vast, said to be a thousand miles wide and millions of miles long.
In a day of 24 hours, before noon, the surface is not filled with vapor, but with unpredictable water fog. After noon, the water fog disperses, and fire like molten lava swallows and protrudes like a tongue.
The fog is cold and piercing; Dark Practitioners and Dark Beasts below the Holy-grade, if they wish to cross, would be frozen and dead within just a quarter of an hour.
The burning smoke can turn a person into ashes in just a moment.
Such a dangerous place, crossing it is naturally not easy.
There are said to be only two ways to traverse the Boundary River: one is by flying, such as using flying Holy Beasts or advanced Dark Techniques.
