In the Chatrakam Cave, located north of Sumeru City, you'll find an enemy encampment with an Energy Extraction Device that can be diffused with the help of control keys. Reference the image below to find the exact location of the Challenge. Since the area is swarming with enemy Eremites, make sure to bring a battle-ready team.
Once you get there, you'll find a mechanism called an Energy Extraction Device. The glowing yellow part on the top is one control key—you need to find two more to place on the red parts on the left and right of the ring.
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How to Look for a way to control the extractor in Genshin Impact
In this part, you need to find the two missing Control Keys in order to shut down the Energy Extraction Device.
First Control Key location
Head inside the building behind the Energy Extraction Device and follow the path until you find a floating yellow item. Approach it to obtain the first Control Key. Defeat the enemy Eremites that spawn and then exit the building.
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Second Control Key location
Assuming that the Energy Extraction Device is in front of you, turn left and climb the small mountain. Glide toward the top of the building, then jump into the small crevice to reach another part of the building. Defeat the enemy Eremites on the way, then follow the path inside until you find a similar floating yellow item. Approach it to obtain the second Control Key.
How to guard the extractor until it shuts down in Genshin Impact
After obtaining both Control Keys, interact with the Energy Extractor Device to begin a battle segment. A small energy bar will appear above it. Your goal is to stand beside the Device until the gauge above it becomes full. If you're too far away or if there are enemy disruptions, the gauge will stop filling up, so make sure to defeat all the enemies that spawn and stand close to the Device afterward. Once the gauge is all filled up, the Energy Extraction Device will turn off, rewarding you with an Exquisite Chest.
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Nicki is a freelance writer with 5 years of writing experience. She's a fan of anything from HoYoverse, from Genshin Impact to Tears of Themis and Honkai: Star Rail. She also loves rhythm games like BanG Dream! and D4DJ.