As for the Engraving Wisdom of Depth Three, the concept of shadow has really not been encountered till now.
Fu Qian, of course, wouldn't miss this situation, and the explanations seemingly are just a few kinds—
For instance, as circumstances become more broken, that sort of calamity has already vanished.
Don't forget that during the first encounter with the Brain Jellyfish, nothing shadow-like was seen.
And the current level of ruin is undoubtedly the closest to that.
Or like in Depth Two, when one's status was being a shadow without realizing it, and from the reactions of those researchers, he deduced the rule of shadows and real people being mutually invisible.
So, it's not impossible that the current state is so terrible that everyone has turned into shadows.
And because such a state is unperceivable to each other, everything remains as usual.
However, as it now seems, things might not be that simple.
