In truth, what excited Xiao Yang most was not merely the effects of the Spirit Marrow Fruits and Soul Nourishing Fruits.
More importantly, the fruit cores of these two fruits were actually the seeds of Spirit Marrow Trees and Soul Nourishing Trees.
Spirit Marrow Trees and Soul Nourishing Trees were extremely rare.
They needed at least a hundred years to grow to the point where they could bear fruit.
Then, they needed at least another hundred years before they could blossom and bear fruit.
In other words, after planting the seeds, one would need at least two hundred years to obtain Spirit Marrow Fruits and Soul Nourishing Fruits.
As for the number of fruits they bore, that depended on the surrounding environment.
There might be only one or two at the least.
At most, there could be over a dozen.
However, Xiao Yang's Medicinal Field Space was suitable for the growth of any kind of medicinal materials.
Even a Bodhi Tree could slowly grow within it, let alone spirit trees like the Spirit Marrow Tree and Soul Nourishing Tree.
Xiao Yang was very curious whether they could bear twenty, or even thirty or forty fruits at once in the Medicinal Field Space.
If they could, the speed at which Xiao Yang's Soul Power increased in the future would be terrifying.
Even geniuses of the Ancient Emperor Clans could not treat Spirit Marrow Fruits and Soul Nourishing Fruits as ordinary fruit.
After all, it was basically difficult for other medicinal materials to grow around a Spirit Marrow Tree.
All nutrients and Heaven and Earth Energy would be absorbed by it.
Therefore, even the Ancient Emperor Clans could not possess too many Spirit Marrow Fruits and Soul Nourishing Fruits.
In fact, merely getting these seeds to sprout was already a difficult matter.