For Chenyinzi, the matter was quite simple, and thus incomprehensible.
In Red Tower City, what has been delayed in transportation and not sent back is the enormous Great Void ore, Sky Tunneling Silver, which can only be found deep in the Heavenly Sea. This silver metal that only appears in the very eye of the great vortex of the Heavenly Sea is lighter than air and in a constant state of combustion, akin to burning silver suns in the center of the sea's vortex. It only solidifies in water, and without sufficient rotational speed, it dissipates into pure Power of the Great Void.
But as long as it is maintained, it serves as the best core for constructing large Great Void Altars; it's stable and not easily disrupted.