Time trickled by. It was not until half an hour later that Angel saw Laplace slowly rise from beneath the Undying Mirror Sea.
"You..." After returning to the corridor, Laplace stared at Angel with a strange look in her eyes. "How did you refine it?"
Angel: "???"
Seeing Angel's puzzled expression, Laplace fell silent for a moment, then waved her hand. "Never mind. Pretend I never asked."
Angel looked even more confused.
After some thought, Laplace explained, "I was just a little... surprised by the test results."
Laplace quickly told him the results of this test.
Overall, the results were excellent—or rather, unimaginably excellent.
Laplace had begun cautiously, testing the sturdiness of Heart Space starting from its most solid state. Just as she had guessed before, in that state, Heart Space was completely unaffected by the Undying Mirror Sea.
Laplace then slowly expanded Heart Space. No matter how much she enlarged it, Heart Space remained just as solid.
By the end, Laplace's tests became increasingly bold. She even expanded Heart Space to the limit of what she could control: six hundred li in both length and width.
Even under those conditions, the sturdiness of Heart Space did not change in the slightest.
That stability made it seem as though the space had never expanded at all.
That alone had already shocked Laplace. What shocked her even more was that, in this extreme state, she could still continuously place physical objects inside.
Mirror spaces had a high tolerance for energy, but a very low tolerance for physical objects from the material world. Many times, a mirror space could withstand a torrent of energy yet fail to bear physical objects of excessive density.
That was one of the Mirror Realm's rules.
Yet in its extreme state, Heart Space could not only withstand