Old Dunling, Broken Dome.
This is a secretive location, connected to the outside world by only one lift; all other external communication relies on a system called pneumatic tube logistics transfer. The transport pipes are spread throughout the Broken Dome, and under pneumatic power, capsules holding documents travel at high speed. This system always has a mysterious air— even the person storing the capsule does not know where the document will end up.
Here is where all documents ultimately converge. During the Hundred Years' War, Ingwig lost many books; thus, within new era facilities, every department takes document preservation seriously, even the Purification Mechanism.
Countless pipes cascade from the dome like falling star trails, finally pouring into the pool filled with insulation liquid below. Lights illuminate at the bottom of the pool, lighting up each copper pillar, resembling a ritual from ancient myths, exuding a splendid glow.
