Transaction. The method of ascension Emperor Heng referred to was precisely this.
Through the Chaotic Space Channel descending from the Upper Realm, one would be transported to the Chaotic Void where the Upper Realm lay, then cross the Chaotic Void and step into the Upper Realm.
The crux of this method clearly lay in crossing the Chaotic Void, and the key to crossing the Chaotic Void was absorbing chaotic energy.
After all, the burden of transmission across such an immense distance, as well as the erosion of chaotic energy, both required one to adapt to chaotic energy.
Otherwise, death was certain.
Only by absorbing chaotic energy, gaining chaotic attributes, and adapting to chaotic energy could one possibly endure it.
The other world Emperor Heng spoke of, one suitable for migration, was a world near the Cultivation World's node.
According to him, this world had not yet been eroded and transformed. Even if it might someday fail to escape that fate, the span of time should still be quite distant.
After all, the terrifying Unknown Existence within the Star Cloud Ring had already transmitted power for this Cultivation World. It was unlikely to make such a grand effort again for a mere world beyond the node.
More likely, it would use the Cultivation World's node as a hub and spread its invasion into the surrounding worlds, thereby achieving its purpose.
The information recorded deep within the Celestial Heart also contained quite a few descriptions of such invasions.
In ancient times, the so-called Demon World invasion was in fact an evolution of this very sort of erosion. The so-called Demon World was actually a world that had already been transformed.
Otherwise, a Demon World in the true sense of the term was an existence no less magnificent than the Upper Realm. Why