This structure was not conspicuous. Before the Illusory Nightmare Clone plunged into the Boundary Curtain, it had not noticed it.
Yet they were definitely not normal. Most likely, that Great Monarch Ma Ge had deliberately deployed a measure aimed at cultivators of Illusory Nightmare System Power.
Ronan had only noticed this "common detail" while sensing those "dangerous checkpoints":
Whenever someone had somewhat abnormal thoughts about the Boundary Curtain and there was a possibility they might be "guided," the corresponding traces of thought were like "snags" pulled up on silk. With repeated rubbing and tugging, they became more pronounced, and they connected with the Boundary Curtain, completing a certain woven framework.
Fortunately, the targets Ronan had chosen were all Celestials who had originally been handling the Boundary Curtain Leak Point incident. It was not strange for them to think and weigh things over repeatedly, so even if corresponding structures existed, they were easier to muddy.
But there was another point, and it was very important.
If Great Monarch Ma Ge observed and compared them across different time periods, he would notice that the "snags" of related thoughts from these Celestials in the "inspection team" had, during that recent interval, grown a little faster than at other times, like weeds after rain.
Nor was it only these Celestials. In fact, most living beings on Plane Six would probably have a Trace of "excessive thought."
Because the Giant Pseudo-Ancient God Structure was absolutely real. Even if it stayed honestly within the Boundary Curtain and the spacetime on both sides, its very existence would form a reverse effect.
They did not think about the Boundary Curtain, but the Boundary Curtain might come looking for them.
After all, its "size" and "weight" were right there—when an elephant stood on a boat, the hull's waterline would