How to Unlock Restricted Area Wuling Fog in Arknights Endfield

What to know

• Wuling Fog is a restricted sub-area located near the barren outskirts of Wuling
• Liquid Xiranite is mandatory to disperse the fog blocking the terminal
• You must have the Jet Drone unlocked before attempting entry
• Clearing the area rewards you with crates, rare materials, and access continuity to deeper Wuling zones

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If you’ve been exploring Wuling for a while in Arknights Endfield, you’ve probably noticed a thick, unnatural green fog lingering near the outer barren edge of the region. This is not environmental flavor. It’s an intentional progression gate known as the Restricted Area: Wuling Fog, and unlocking it is a multi-system task that tests your preparation, crafting awareness, and combat readiness.

This guide walks you through the entire unlock process in detail, explains what the area contains once opened, and places Wuling Fog in context with the rest of the Wuling region so you understand why clearing it matters long-term.

Restricted Area Wuling Fog explained

Category	Details
Region	Wuling
Sub-area	Restricted Area – Wuling Fog
Location	Near the barren outskirts
Key requirement	Liquid Xiranite (Ferrium Bottle)
Mandatory tool	Jet Drone
Enemy encounter	Aggelos
Rewards	Oroberyls, Protoprism, crates
Purpose	Unlocks exploration continuity

Where the Restricted Area is located in Wuling

The Wuling Fog sits at the edge of Wuling’s environmental transition zone, where structured terrain gives way to sparse land and unstable atmospheric effects. As you move toward the barren outskirts, vegetation thins out, elevation flattens, and visibility begins to drop sharply due to the fog layer.

This fog is not passable by movement alone. You cannot brute-force your way through it, bypass it with elevation, or interact with the terminal hidden inside until the fog itself is neutralized. The game clearly signals this by showing an inactive terminal node partially obscured by dense green mist, accompanied by non-interactive prompts.

The location is deliberately placed along a natural exploration route, meaning you are expected to encounter it before you are able to unlock it. That makes preparation critical.

How to unlock Restricted Area Wuling Fog

Unlocking this area is a linear but multi-step process that pulls from crafting, exploration tools, and combat systems. Missing even one requirement will halt progress entirely.

1 – Crafting Liquid Xiranite correctly

The most important prerequisite is Liquid Xiranite stored inside a Ferrium Bottle. This is not an optional item, and alternative containers or partial components will not work.

To create Liquid Xiranite, you must combine three specific elements through the appropriate crafting process:

Component	Purpose
Clean Water	Acts as the stabilizing base
Stabilized Carbon Powder	Enables chemical suspension
Xiranite	Reactive core material

Once combined, the mixture becomes Liquid Xiranite, which must then be stored in a Ferrium Bottle. Without bottling it, the item remains unusable for environmental interaction. The game checks for both the liquid state and the correct container.

If you arrive at the fog with the mixture unbottled or stored incorrectly, the Jet Drone interaction prompt will not appear.

2 – Jet Drone requirement and why it matters

Before you even approach the fog, you must have Jet Drone functionality unlocked. Standard drones or manual tools cannot apply Liquid Xiranite to the fog layer due to range and dispersion constraints.

The Jet Drone is required for two reasons:

• It allows safe distance application of Liquid Xiranite
• It ensures even dispersal across the fog density field

Once deployed, the Jet Drone lets you aim directly at the densest part of the fog mass, triggering a short reaction animation as the liquid interacts with the mist.

This interaction permanently clears the fog layer in that zone.

3 – Reaching the dense fog-covered area

With Liquid Xiranite bottled and the Jet Drone available, return to the fog-dense zone near the barren outskirts. Move close enough for drone deployment, but do not attempt to enter the fog itself.

After spraying the Liquid Xiranite, visibility improves dramatically, revealing the terminal spot that was previously inaccessible. This is your next objective.

Interacting with the terminal and triggering combat

Once the fog dissipates, you can interact with the terminal inside the restricted area. Doing so immediately triggers a hostile response.

This is where Aggelos appears.

Aggelos functions as a guardian-style enemy, designed to ensure you are combat-ready before the area becomes permanently accessible. The encounter is not optional and cannot be skipped.

After defeating Aggelos, the terminal fully activates, and the Restricted Area: Wuling Fog is officially unlocked.

At this point, the fog does not regenerate, and the area becomes part of your standard exploration map.

What to expect inside Wuling Fog after unlocking

The moment you step into the cleared area, the tone shifts noticeably. Instead of harsh terrain and obscured visibility, you’re greeted by a calm green landscape marked by shallow streams, soft ground lighting, and ambient environmental effects.

This contrast is intentional. Wuling Fog is meant to feel like a hidden pocket of stability rather than another hostile frontier.

Environmental features and enemies

You will encounter Aggelos units within the area, though these are standard roaming enemies rather than gatekeepers. The environment itself is navigable and relatively open, making it a good location for material scanning and controlled engagements.

Streams run through parts of the area, and elevation changes are minimal, allowing for efficient movement and exploration.

Loot and exploration rewards

Wuling Fog is not a high-density farming zone, but it does provide consistent and meaningful rewards, especially for players progressing through mid-game systems.

You can expect to find two to three loot crates scattered throughout the area. These commonly contain materials such as:

Reward type	Notes
Oroberyls	Core progression currency
Protoprism	Advanced crafting component
Upgrade materials	Varies by crate

The rewards are not randomized heavily, making Wuling Fog a reliable stop rather than a gamble-based location.

Why unlocking Wuling Fog matters for overall Wuling

While Wuling Fog may seem like a self-contained side area, unlocking it has broader implications for how Wuling unfolds as a region.

Clearing this restricted zone improves map continuity, removes exploration dead ends, and reinforces your readiness for more complex environmental challenges later on.

It also acts as a narrative and mechanical bridge between different Wuling sectors.

What’s more to explore in Wuling after the fog

Wuling does not end with the fog. In fact, this area serves as a midpoint rather than a conclusion. Beyond it, you’ll continue to encounter distinct sub-regions such as:

• Residential sectors, which focus more on structure, terminals, and NPC-linked systems
• Outskirts, where environmental hazards and resource scarcity increase
• Power array zones, built around infrastructure, energy flow, and higher-stakes encounters

Each of these areas builds on the mechanics introduced in Wuling Fog, especially the idea that environmental obstacles often require crafted solutions, not just combat power.

Unlocking the calm behind the fog in Wuling

Unlocking the Restricted Area: Wuling Fog is one of those moments in Endfield that quietly reinforces what the game does best. You’re not just opening a door; you’re proving you understand how systems connect.

By crafting Liquid Xiranite correctly, using the Jet Drone as intended, and defeating Aggelos, you turn an impassable barrier into a serene, resource-rich zone that deepens your connection to Wuling as a whole.

And with larger areas like residential districts, outskirts, and power arrays still ahead, clearing the fog is less about what you gain immediately—and more about showing you’re ready for what Wuling throws at you next.