For an Eighth Order Peak expert to break through to the Ninth Order Supreme Realm, they too had to undergo the Heaven-Piercing Tribulation. It was practically identical to the tribulations faced by Mystic Treasures.
The Heaven-Piercing Tribulation was extremely complex. Compared with the Four-Nine Heavenly Tribulation through the Nine-Nine Heavenly Tribulation of the Creation Realm, the Heaven-Piercing Tribulation contained not only external tribulations, but internal tribulations as well.
Ordinary heavenly lightning belonged to external tribulations. Yet when undergoing the Heaven-Piercing Tribulation, internal tribulations erupted from within the cultivator's body. That was the greatest test for a cultivator.
At that time, heavenly lightning lay outside while heartfire raged within. Beset by troubles both within and without, countless prodigies had been struck down at this step, ultimately perishing with body and soul extinguished.
The Heaven-Piercing Tribulation of Mystic Treasures was the same. An internal tribulation would also erupt from within the Mystic Treasure. Chen Fei was not even confident of undergoing the Heaven-Piercing Tribulation himself, much less helping a Mystic Treasure undergo it.
If Chen Fei truly dared to fuse the Void Return Realm Origin into a Mystic Treasure now, the final result would be the Mystic Treasure being torn apart by the Heaven-Piercing Tribulation, truly scattering between heaven and earth.
Stray thoughts flashed through his mind. Chen Fei's figure flickered, and he flew straight toward the tribulation clouds.
The Nine-Nine Heavenly Tribulation no longer posed any threat to Chen Fei. The heavenly lightning was equivalent in power to attacks from an ordinary Eighth Order Peak expert. Even if Chen Fei simply stood still now, the Nine-Nine Heavenly Tribulation could do nothing to him.
Chen Fei flew toward the tribulation clouds because he wanted to upgrade the Qian Yuan Sword in his hand.
A mid-grade Creation Profound Treasure was already too weak