With Little Stone's current nutritional reserves, they could only construct five test houses and one test monument.
The test monument was not much of a concern; regardless of how many test houses were built, the results were all connected to the test monument. Just building one was sufficient.
Although there were only five test houses, in the future the Crystal Underground would definitely develop an area surrounding the unique test houses specifically for testing player combat ability statistics.
Eventually, there would certainly be more than just these five test houses, and space needed to be left for future test houses.
Although the buildings in the Underground City could be taken back and rebuilt, once the scale increased, it wouldn't work to just expel the players inside every time, then replan and construct, making them reacquaint themselves with a completely new place when they return!
