"Now, the Deep World and the Shallow World are completely disconnected, is this reasonable? Is it right?"
After the butterfly consciousness dissipated, the Nightmare Passage shattered, the closet in the Death Building vaguely became a hub connecting the Deep World with the outside.
As the game progresses, there might emerge more and more hubs like the Death Building, the Deep World seemed as if, under the meddling of some force, had its seals unlocked, and is slowly surfacing from the deep sea, gradually blending with the outside world.
"The previous owner of the Black Box was Fu Sheng, he chose complete destruction, which resulted in the Deep World being entirely sealed in the night, where all the grudges and monsters could only immerse themselves in despair."