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DMZ CODEX · HAJIN EXCLUSION ZONE UPDATED 2 NOV 2026

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Area overview: Chang-san Air Base
Guide · Bosses & PvP

Weapons Mod Workshop: air-base key and upstairs route

Locate Chang-san Air Base and its clinic before entering the military buildings.

In short

Use the Weapons Mod Workshop key upstairs in the military repair garage directly west of Chang-san Air Base's clinic. B5 is the key's search area; match the named workshop lock after climbing the interior stairs.

Use the Weapons Mod Workshop key upstairs in the military repair garage directly west of Chang-san Air Base’s clinic. B5 is the key’s search area; match the named workshop lock after climbing the interior stairs.

Open the map search area · Check the matching key

Find the named entrance

  1. Locate Chang-san Air Base and its clinic before entering the military buildings.
  2. Find the military repair garage immediately west of the clinic; the walkthrough approaches a large building within the base walls.
  3. Go inside and take the interior stairwell to the upper floor. The key card calls this the second floor; use the named lock rather than a floor-number guess.
  4. Clear the approach and read Weapons Mod Workshop on the door before using the matching key.

Workshop, Field Depot and bunker are different stops

Field Depot is northeast of the clinic in a supply warehouse, whereas this workshop is west of it and upstairs. Supreme Leader’s Bunker uses separate access. Do not carry one key and plan to open all three.

What the room search establishes

The reviewed short walkthrough establishes the approach, but not a complete room loot table or repeatable key pickup. Choose this detour when you already hold the key; do not buy a loadout around an advertised guaranteed Manual.

Use the Key Finder · Plan extraction

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