Regardless of whether living creatures were strong or weak and regardless of their various aspects including culture, background, and character, they all tended to have a great connection to their environment.
Several ten thousand years ago, the martial arts in the Central Continent developed to a great extreme. Everyone practiced martial arts, and almost every top-notch faction could traverse parallel worlds and send their own disciples to other worlds with Nine-Tiered Heavens, striving to clear the trials and progress up the Divine level.
In that golden era, the Central Continent and Miracle World had yet to be connected. Even Venerable Master Zhai Xing had not been born yet. Amongst the Central Continent's top-notch factions, reaching tier one of the Divine level was merely the beginning.