Daoist Hunyuan knew that the best body-tempering technique in the world was the Nine Revolutions Golden Body, created by Great God Pangu and derived from the Chaos God Demons. Even its first revolution could contain the magical power of one Yuanhui, and with each step in cultivation, the amount of power it could contain increased geometrically. This showed just how astonishingly powerful a body the Nine Revolutions Golden Body could forge.
All Chaos God Demons had body-tempering techniques, but the Nine Revolutions Golden Body was the most powerful. Its complete inheritance had been lost to the world, so Primordial Heavenly Venerate had created the Eight-Nine Arcane Arts based on a fragmentary cultivation method. It emphasized forging a golden body and attaining sainthood through the flesh. However, the power of this golden body came from borrowing the power of Heaven and Earth, and focused more on the way of profound transformation. One had to transform into the likeness of a Primordial Exotic Beast to bear and unleash the body's formidable strength.
The Eight-Nine Arcane Arts was also a shortcut. Although it could increase the body's strength, its effects were quite limited. It merely imitated Primordial Exotic Beasts, absorbed the power of Heaven and Earth, and unleashed it according to their methods of attack. Still, it was a decent divine ability, though very few could cultivate it.
The Wu Clan's cultivation method, however, was inherited from the Nine Revolutions Arcane Arts. Although it was also incomplete, it was far more powerful than the Eight-Nine Arcane Arts. It united the primordial spirit and the body as one. With a powerful physique, one could shatter mountains and stones, move mountains, and fill seas. Someone as powerful as Great God Pangu could destroy the heavens and earth with a single punch.
Chi You said, "The