Passing through the stone door behind the throne, Lu Yu was met with a yet-to-be-formed "chaos world," where the spiritual qi was so dense it had liquefied, and at the center of this "world," a light sphere suspended.
Chu Tianhe observed the scene and exclaimed, "A geoduct?"
"A geoduct?" Lu Yu was puzzled, what is a geoduct?
He had heard of a spirit vein and knew what it was, but the term geoduct was foreign to him, beyond his concept.
Light flashed in Chu Tianhe's eyes, seemingly understanding why the Zhou Dynasty had yet to act against Black Sand City.
Seeing the confusion in Lu Yu's eyes, Chu Tianhe explained, "A geoduct is a type of spirit vein, but a geoduct does not produce spirit stones, it only determines the concentration level of spiritual qi in an area."
"The spiritual qi concentration near Black Sand City is generally 1-2 times higher than other places because there is a geoduct beneath Black Sand City, and we are now at its center."
