"Did they never consider that not every labyrinth has an exit?"
"Here, there are only entrances, no exits... Rather than calling it a 'labyrinth,' I'd prefer to call it a 'nest.'"
Big Snake had pondered for a long time and used such a term, the Netherworld King's Spark had bestowed unprecedented wisdom upon it, and the soul fire it had absorbed over the years also allowed it to glimpse some memory fragments from the warm world in the south.
"The sole purpose of this place is to witness the reunion between you and me."
Gu Shen fell silent once again.
He stretched out his palm, touching the cold mountain rocks.
So... the teachers and the others, walking outside the labyrinth, were actually due to the effect of "Rule Points," seeming close but actually very far... And those fallen wood shavings were accidentally pulled into the Dream by Big Snake's realm.
Well... this is the only explanation I could come up with so far.