What to know
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Unlike permanent water sources that show an infinity symbol, this pool has a finite capacity of 600 units.
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Draining the pool requires a combination of electrical power, fluid pumps, and storage tanks.
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Once the water level drops low enough (around 100 units remaining), you can begin interacting with the puzzle floor.
In Arknights: Endfield, the Field Logistics Depot area in Wuling contains a square storage pool that hides a puzzle under the water. To solve the puzzle and claim the reward, you must first drain the water completely.
Location
The square storage puzzle is located in the Field Logistics Depot, Wuling. The exact location is shown below.
How to empty the Storage Pool
Step 1
Place a Fluid Pump (Extractor) at the edge of the water.
Step 2
Now place a Pylon for power.
And bring a power line to it.
Step 3
Place a fluid tank to store the water somewhere.
Then connect the pump with the tank using a pipe.
Step 4
A single pump extracts roughly one unit per second, taking 10 minutes to finish.
Using multiple pumps will speed up the process.
Step 5
Now make sure to connect the pumps via pipes to Fluid Tanks for any additional tanks, and ensure the water has somewhere to go.
Step 6
Use your scanner to check the water level. As the pumps work, the “Pure Water” count will drop from 600 toward zero.
Once the water is drained, you can start the challenge:
Step 1
Interact with the small terminal next to the pool.
Step 2
The square tiles on the floor will illuminate in a specific sequence. We’ve marked the sequence below (in the image).
Step 3
Jump and perform a plunging attack on the squares in the exact order they flashed.
Step 4
Successfully following the pattern will spawn a chest in the center of the depot.
Rewards
The chest drops several items, including:
- Oroberyl – x60
- Protoset – x1
- Contingent Measure – x1
- Arms INSP Kit – x1
Emptying the square storage in Wuling is a simple matter of resource management—once you provide power and enough storage capacity for the 600 units of water, the puzzle becomes accessible.
Hope this walkthrough proved helpful. Feel free to leave your opinions, corrections, or questions in the comments—we keep an eye on them and respond as needed.
