By now, the magic boxes Sikong Jing had seen were the Frost Magic Box and the Stone Pedestal Magic Box. They had respectively been refined from a living Ice Eternal Mystic Turtle and Nether Lotus Sea Serpent, preserving all the meridian attributes of two Saint Martial Stage demon beasts...
Yet things were hidden within the magic boxes as well...
For instance, the Frost Magic Box concealed incomparably powerful knowledge of army-slaying formations.
As for the Stone Pedestal Magic Box, Sikong Jing did not yet know what it contained, but it was certainly no simple matter.
The Willow Leaf Sacred Wall was enormous, yet it also resembled a magic box.
But clearly, it had not been refined from a living demon beast. It contained none of a demon beast's meridians or anything of the sort.
Then was it, in the end, a magic box or not?
Just as Sikong Jing was unable to make sense of it, the Divine Turtle in the Ten Thousand Beasts Heavenly Prison spoke faintly. "Lord of Ten Thousand Beasts, magic boxes refined from demon beasts are merely one kind of vessel. Your human race can likewise use other things as vessels."
"For example, the refiner could use trees that have lived for a million years and have nearly developed sentience as vessels."
At the Divine Turtle's reminder, Sikong Jing's eyes instantly lit up, and understanding dawned on him.
In other words, the refiner's use of living demon beasts to create magic boxes was merely to make a vessel for inscribing inheritances of power.
It was simply a container. And naturally, a container did not have to be a demon beast.
As long as it was sufficient to serve as a vessel... in the refiner's eyes, the demon beast meridians of the magic box itself were unimportant.