Whether it's the former or the latter, everyone need not worry.
After all, those creatures beyond the wall, whether they haven't discovered it or disdain to invade within the wall.
In the short term, they won't cause too much harm. After all, if they intended to invade within the wall, they would have done so long ago, no need to wait for them to find this loophole.
Actually, thinking about it, it makes sense; there is no attraction within the wall for creatures beyond the wall, even the world's number one, the Supreme Primordial True One, is considered a lower medium strength when outside the wall.
So, the overall strength within the wall, if moved outside the wall, might not even be able to defeat a dominant force outside the wall.
Mind you, the entire outside world must be filled with countless forces, and a single dominant force definitely numbers in the hundreds, maybe even several hundred.
