The two worlds were roughly the same size.
The spiritual energy density of the two worlds was roughly the same.
The number of living beings in the two worlds was also roughly the same.
The completeness of the laws of heaven and earth in the two worlds was likewise roughly the same.
But why was the number of powerful experts they produced so vastly different?
A world with a complete Inheritance was actually inferior to a world that underwent the Cleansing once every tens of millions to hundreds of millions of years?
This defied all reason.
It utterly defied all reason!
Su Bai's gaze grew profound.
His divine sense continued paging through the River of Time of this world.
He was searching for the most fundamental difference between these two worlds.
That difference was the Epoch Calamity!
This world had no Epoch Calamity!
Yet the world where the Heavenly Dao Sect stood had Epoch Calamities!
An Epoch Calamity descended once every tens of millions to hundreds of millions of years, cleansing the entire world, erasing the civilization of the previous Epoch, and making all living beings start anew.
It sounded like a punishment, a disaster, a curse placed upon that world.
Yet at this moment, Su Bai saw the meaning of the Epoch Calamity from another perspective.
It was pressure!
It was selection!
It was tempering!
At most hundreds of millions of years, at least tens of millions—the Epoch Calamity would descend!
When that time came, everything would be cleansed, everything erased!
If one could not reach a sufficiently powerful realm before the Epoch Calamity descended, one would be unable to survive it and would vanish into ashes along with the civilization of the previous Epoch!
That pressure, that urgency, that sense of crisis between life and death had already