For a cultivator to break through to the Nascent Soul Great Perfection Realm, even one with a Heavenly Spiritual Root, the time required would likely not be short.
According to He Song's estimates, for a cultivator with a Heavenly Spiritual Root to successfully raise their cultivation to the Nascent Soul Great Perfection Realm—
It would take roughly over a thousand years.
Moreover, during those thousand-odd years, that cultivator with a Heavenly Spiritual Root would need to consume vast quantities of heavenly treasures, and swiftly break through every bottleneck they encountered.
Otherwise, the time required would likely be extended even further.
To spend just over a thousand years raising one's cultivation from Qi Refining Layer 1 to the Nascent Soul Great Perfection Realm—
That was already considered incredibly, incredibly fast.
Such a rate of cultivation advancement required one to have been born within a Spirit Transmutation Holy Land.
Then, upon displaying their talent, they would have to receive that Spirit Transmutation Holy Land's full support at once. Only then could they possess such a rapid rate of cultivation advancement.
Furthermore—
Even if this cultivator with a Heavenly Spiritual Root spent over a thousand years raising their cultivation to the Nascent Soul Great Perfection Realm—
It was actually unlikely that they could immediately attempt a breakthrough to the Spirit Transformation Realm.
After all, there should originally have been a Spirit Transformation cultivator within the Spirit Transmutation Holy Land where they resided.
Cases where one side had only just broken through to Nascent Soul Great Perfection while the other was already at the end of their lifespan were still rather rare.
In other words—
Even if this cultivator with a Heavenly Spiritual Root had already reached the Nascent Soul Great Perfection Realm—
The time when they could subsequently attempt to break through to