One of the ten forbidden lands, the Zero-degree Plain, is located in the Far North.
It is referred to as another world and is the only place in this world that no one has ever explored.
The zero-degree of the Zero-degree Plain does not mean just zero-degree; it refers to absolute zero.
On the Zero-degree Plain, the average temperature can reach minus one hundred and eighty or ninety degrees, and in winter, the lowest temperature on the plain can reach minus two hundred seventy-three point one five degrees.
No one knows if there is life on the Zero-degree Plain, nor does anyone know what lies at its very center.
Over a thousand years ago, a Demon Sect giant, who cultivated an ice-based Cultivation Technique, discovered that the colder the location, the faster the cultivation speed.
