There's another spatial device known as the "Pot of Cave Heaven," with an internal space of about 100,000 cubic kilometers that can accommodate one billion or even ten billion people!
If it's in the mode of a city in the sky, how large would a city need for ten billion people? It's simply not practical.
But with this Pot of Cave Heaven, it can easily fit, and the living space is still very spacious.
In short, space technology is incredibly powerful, akin to magic for current humans. Scientists eagerly look upon it, and even diplomats now truly desire the Level 5 Civilization.
However, sadly, these items are extremely expensive, with the cheapest "Klein Bottle" costing a million value units.
The more favored four-dimensional protective shield requires fifteen million value units!
"Aren't these items just singular, displayed here for everyone to see without the intent to sell?"
"It's possible."
Only Lu Yuan, after the initial excitement, developed some faint worries.
