Five minutes later, Yun Feidian was already fifty or sixty meters underground, in a dark and intricate world as convoluted as a labyrinth.
As far as the eye could see, deep, narrow tunnels surrounded him, without the slightest trace of light.
Even with Extraordinary Vision activated, he could only vaguely make out skull symbols denoting danger painted across the mottled walls.
Back when Dragon City was still part of Earth, this place had been a hub of Dragon City's early underground rail transit system.
When Dragon City crossed over, the underground transit hub had also been torn to pieces by the powerful spatial storm, left fragmented and without any coherent structure.
With the geological conditions having undergone earth-shaking changes, restoring the old underground transit system to its former state would have come at an exorbitant cost. It would have been better to build anew based on the entirely changed terrain.
As for these old lines, during the Monster War, they had been converted into Underground Shelters and armories.
During the harshest and bloodiest years of the war, countless human resistance fighters had hidden their claws and nursed their strength here, recuperating until their wounds healed before charging back to the surface and reclaiming their own living space.
As Dragon City Civilization shifted from defense to offense and Monster Civilization found it increasingly difficult to infiltrate Dragon City's interior, the military value of these underground facilities had also plummeted.
After the victory in the Monster War, plans to renovate the aging underground facilities were also placed on the agenda.
However, just like the redevelopment of the Old Factory District, which was struggling every step of the way due to constraints in funding, investment solicitation, overall planning, and other factors, whether these deep underground facilities, bearing the heavy imprint of the old