That was because Desolate Heaven Emperor had cultivated the Thunder Emperor Method and comprehended the secret of the Thunder Pool, allowing him to control the Power of Heavenly Tribulation and make heavenly tribulations in the Human Realm so frequent.
Take Desolate Heaven Emperor during the Chaotic Ancient Era, for example. From the beginning of his cultivation until he advanced to the Peak of the Extreme Dao, the number of Thunder Tribulations he underwent could be counted on one hand. Even combined, they were probably fewer than the number a single Immortal Two Great Power had experienced.
Although their quality could not be compared, Thunder Tribulations were also trials and tempering imposed on cultivators by Heaven and Earth. They could strengthen a cultivator's Great Dao Foundation.
In Li Zhi's view, there was a reason countless cultivators in the Other Domain or the Immortal Domain remained trapped before the threshold of the Supreme Domain for millions of years without truly ascending to it.
If they had undergone a Thunder Tribulation every time they advanced a Minor Realm starting from the Four Extremes Realm, would they still have been trapped before the Supreme gate for a million years?
In Li Zhi's view, the Thunder Tribulations existing in the Human Realm were the greatest cheat Desolate Heaven Emperor had left for his successors.
If a cultivator wanted to become an existence at the Peak of the Extreme Dao, they practically had to undergo more than seventy Thunder Tribulations before they had any chance of ascending to the Peak of the Extreme Dao.
This was treatment even Immortal King Descendants could not enjoy.
Even in the Immortal Domain, for a true descendant of an Immortal King to become a Supreme in the Human Way Domain, even the most gifted needed one or two thousand years