The Human Emperor Sword of the current era, the strongest of its kind, descended from the higher dimension of the Nine Heavens, carrying the strength accumulated over countless ages!
The Nine Heavens Heavenly Dragon, formed by unifying the three realms, with the three Great Daos each transforming into its meridians, flesh, bones, and scales!
Both were crystallizations of Immortal Dao Science and wisdom at the pinnacle of their respective paths in this era's Endless Starry Sky. They embodied the glory and paths of countless living beings. Powerhouses of innumerable races and deities had placed their faith in inevitable victory upon them. They had to win; they dared not lose, for defeat meant death and the extermination of their races.
The two terrifying attacks met within the Nine Heavens. Before they even touched, inexplicable creaking sounds rang out, as though something fundamental in nature was being destroyed.
This was a battle over the height and rank of the Nine Heavens!
An inexplicable distortion and violent collision occurred between the Two-dimensional Heavenly Sword and the glistening white Nine Heavens Heavenly Dragon. Great Dao, karma, flesh, and blood were all being annihilated.
"Roar!"
"Roar, roar, roar... Clang, clang..."
The Heavenly Dragon roared, while clear sword chimes drifted intermittently from the Nine Heavens. Though merely faint sounds, they could be heard distinctly throughout the Endless Starry Sky. Even the slightest tremor carried from there would stir howling gales across the Endless Starry Sky, sweeping through rivers of stars and shifting many World Coordinates.
This was the Nine Heavens—the higher-dimensional Nine Heavens, the Nine Heavens of higher rank!
Anything occurring within the Nine Heavens could affect the Endless Starry Sky through unimaginable processes. The Nine Heavens were too important. Thus, from the very beginning, the battle between the four True Immortals had taken place there.