How to Explore the Facility Interior in Genshin Impact

Completing the Beneath the Lunar Sea quest is essential for unlocking the Curtain-Form Blackbody Containment Lab in Genshin Impact. This facility is where you exchange Luna Sigils for valuable rewards like Primogems, Acquaint Fate, and the Luna Treasure Compass. The following guide walks you through exploring the facility interior step by step, ensuring you don't miss a single mechanism.

For more assistance with the Moontide Sea area, check out the latest Genshin Impact guides and our related article on How To Reach Outer Space In Genshin Impact.

Prerequisites

• Complete the main questline up to Moontide Sea.
• Locate the scared Kuuhenki on the isle north of the Curtain-Form Blackbody Containment Lab to trigger the quest.
• Defeat the sphere enemy and follow it to the lab entrance.

Step 1: Trigger Beneath the Lunar Sea Quest

To begin, find the scared Kuuhenki north of the lab. Defeat the roaming sphere enemy nearby, then follow the Kuuhenki to the lab entrance. This initiates the Beneath the Lunar Sea quest.

Step 2: Explore the Facility Interior

Once inside the facility, follow these steps precisely:

• Push the Ancient Moon Pearl towards the Pearl Power Station on the wall.
• Proceed through the unlocked door and leap down toward the Moon Energy Pearls.
• Absorb Archaeolume Energy and glide to the northern platform.
• From the middle door, turn left and enter behind the cracked wall.
• Defeat enemies inside to free the jellyfish.
• Absorb more energy and shoot Ripples at the Back-Up Power Generator.
• Reabsorb Archaeolume Energy and aim it at the stacked stones near the jellyfish to activate the lift.
• This reveals a Material Storage Chest; open it to spawn the Moon Pearl Launcher.

Now use the launcher:

• Absorb Archaeolume Energy, stand on the launcher, and jump.
• Aim Ripples at the Archaeolume Energy Barrier in the ceiling above the launcher to create a hole.
• Wait for Ancient Moon Pearls to fall.
• Push one pearl onto the launcher and activate it to send the pearl toward the Pearl Power Station near the door.
• Follow the pearl and roll it into the empty Power Station.

Step 3: Activate the Containment Lab

After placing the pearl, the door unlocks, revealing the Containment Lab tree. Interact with the Terminal to activate the Moontide Sea exploration system and complete the quest.

Rewards and Next Steps

Unlocking the lab grants access to the Curtain-Form Blackbody Containment Lab, where you can trade Luna Sigils for:

Reward	Quantity
Primogems	Variable
Acquaint Fate	1
Luna Treasure Compass	1
Borderland Shrine of Depth Keys	1

To maximize rewards, explore Moontide Sea, Dark Side Of The Moon, and Dunnana Forward Station to level up the lab to its maximum. For character builds in the current version, refer to our dedicated guides.

Final Thoughts

Exploring the facility interior is a straightforward but puzzle-heavy segment of Beneath the Lunar Sea. By following this step-by-step guide, you can efficiently unlock the Curtain-Form Blackbody Containment Lab and start redeeming your Luna Sigils for premium rewards. Don't forget to level up the lab fully for maximum value.