Of course, such a cavern world is just a prototype of a world and cannot be considered a real world.
To some extent, it's similar to the space of a storage bag.
It can only store inanimate objects and cannot store living beings.
However, even so, it is completely sufficient. Many earth immortals store their treasures within the Tao fruit cave heaven, as it is the safest place, where no one can steal from them.
"The diameter is a full three thousand kilometers."
Zhou Sui perceived that the cavern world within his Tao fruit was a full three thousand kilometers, an unimaginably immense cavern world.
It should be noted that when ordinary earth immortals first ascend, the cavern world within them is at most only a few kilometers.
But his cavern world, from the beginning, spans three thousand kilometers.
This is practically over a thousand times more than other earth immortals, truly exaggerating.
