Ruined City

The blood-red miasma spreads around the world, the hotel elevator stops; the dark red liquid flows in the bottle; and every time you go down a level, the pollution index erodes by one point... When the blue light of the dagger goes out and the physical energy reaches the bottom, is the world outside the revolving door the end of the world, or is it a deeper hell? In the mysterious Numbering Research Institute, can Wu Yan, who has traveled through time, find his way home in this chaotic world?