As early as the beginning of construction, the Underground City already had a permanent population to operate the equipment here, but now the things produced are no longer transported to the surface because Night City on the surface is already finished.
The designated limit for refuge in this underground facility is 500,000 people. Now it is almost full, and the living area of the entire Underground City is actually quite crowded, with more space left for production areas than for residential areas.
Ever since Hansen took office as the commander-in-chief of Night City's City Defense Army, Night City began improving the Peizhuo Petrochemical Stadium and the multi-level parking lot below it, aiming to transform it into an underground command post for a military base, and shifted the core industrial part underground.