Aging was something that couldn't be reversed. One's flames of vitality could wane, and to replenish it was extremely difficult.
Although there were few natural treasures in the world which could rekindle the flames of vitality, they were either priceless or only capable of restoring the vitality of low-level warriors.
As for peerless experts, there was nearly no way of restoring their vitality even for Supremacies, much less Divine Lords and Godly Monarchs.
And Old Snake was no ordinary Godly Monarch. As one of the eight ancient Godly Monarchs, his powers had been lost for hundreds of millions of years; yet, he was capable of being restored?
Such a heaven-defying change of fate, the reversal of life's natural order, was indescribable.
If that were the case, what kind of realm had Yi Yun's strength reached?