This walkthrough will show you how to all Luxurious Chests in The Chasm: Underground Mines of Genshin Impact 2.6. There are 8 Luxurious Chests in The Chasm.
Luxurious Chest 1: The Chasm Domain Luxurious Chest
The first luxurious chest is available while you try to unlock the Lost Valley Domain/Chasm Domain. To unlock this domain, you will need a Geo character. Select a geo character and go to the location of the domain. Here you will see a giant rock blocking the path as shown in the picture below. Here you will also see a sealed chest on a circular platform, with a few Hilichurls near it.
Now, cast a geo construct on the circular platform on which there was the chest before as shown in the picture below. This will activate the platform and a few wind rings will appear to the south of the platform.
Enter the wind ring to go to the giant rock on the south side as shown in the picture below. You can also climb up on this rock easily without using the wind ring. Use geo attack on this giant rock. This will make the shockwaves travel between the geo constructs. The geo construct that you placed on the circular platform will also become a medium and the shockwaves will travel through it and reach the giant rock blocking the path. This will break the giant rock and clear up the path leading up to the domain entrance.
Go through the newly opened path and you will find the domain entrance inside and a big hole on in the ground. Unlock the domain gate and then jump inside the hole and at the end of the trail, you will see your first luxurious chest.
Luxurious Chest 2: The Millennial Mountains
The Second Luxurious Chest is available once you complete the would quest “The Millennial Mountains world quest” where you have to find 6 offerings in The Chasm. On completing the quest, you will get a Luxurious Chest.
The quest icon will appear on the east of The Chasm’s Maw teleporter as shown in the picture below. Go to the marked location and talk to Wang. He will ask you to find 6 offerings.
#1. Helm of Warding
Go to the house north of the quest starting location as shown in the picture below. At the bottom of the house, you will find a Seelie. Chase the Seelie and it will lead you inside the house. Then the Seelie will go down through a hole on the floor, where you will Find the Seelie Court.
Go to the room next to the room where you found the Seelie Court. Burn the hay in this room. This will reveal a hole on the floor at the location marked in the picture below. Investigate the hole to get the Helm of Warding.
#2. Flower of Farsight
Teleport to The Chasm Statue of the Seven. From there, go southwest to the peak of the mountain at the location marked in the picture below. There you will find the Flower of Farsight next to an NPC named Tang Wuchou.
#3. Warrior’s Spear
The location of Warrior’s Spear is marked in the picture below. You can glide there from the previous offering (Flower of Farsight) location. Or go to The Cham’s Maw teleporter and climb up the cliff on its southeast side to reach there.
#4. Sundial of Ages
Go to The Surface teleporter. From there, go northwest to the location shown in the pictures below. Investigate the items on the table at the marked location to get the Sundial of Ages.
#5. Skyfeather
Go to the teleporter near Glaze Peak. From there, go south and climb up the mountain until you reach the highest point. After reaching the top of the mountain, go to the location marked in the picture below. Here you will find a nest next to a pillar as shown in the second picture below. Investigate the nest to get Skyfeather.
#6. Cup of Commons
Go to Liyue and talk to Lan at the location shown in the picture below to get The Chasm Charters world quest. After completing The Chasm Charters world quest, you will get the Surreptitious Seven-Star Seal Sundering world quest. Complete this quest too.
Now go and defeat the Treasure Hoarders at the location marked in the picture below to unlock the Undetected Infiltration world quest.
Follow the objective marker and go to the Lumberjack Valley. Talk to Yanbo in front of the smuggler’s camp there to complete the Undetected Infiltration world quest.
Once you have all 6 offerings, go back to Wang’s location and offer the items before the memorial. This will make a Luxurious Chest (Millelith’s Treasure) Spawn.
Luxurious Chest 3 – Tiangong Gorge
The third Luxurious Chest is located just north of The Chasm: Main Mining Area as marked on the map. You will go close to the waterfall right where it is marked on the image. There you will see a hole in the wall. You have to go down all the way to the bottom through doors and bridges. Interact with the hole in the wall, and you will enter a secret room that has a Luxurious chest inside.
Luxurious Chest 4
Next, Luxurious Chests can be found in the middle of the Underground Waterway.
Climb up the waterfall and you will notice that the area is a giant circle. You will see some stones that can launch you up in the air.
Use the stone to launch into the air and glide to the other side where you can find a green pillar. Strike the pillar to start a strong wind that can blow you up.
Jump into the wind and ascend to the top to find a luxurious chest.
Luxurious Chest 5: The Heavenly Stone’s Debris
This Luxurious Chest is available while doing the objective “Use the great cannon to destroy the sealing rocks” of the would quest The Heavenly Stone’s Debris.
Use the great cannon to destroy the sealing rocks
Once you release the safety lock, Load the cannonball along with Zhiqiong and use it to destroy the rocks blocking the path ahead. Finally head inside the tunnel. You will also find a luxurious Chest just at the entrance of the tunnel.
Luxurious Chest 6: The Glowing Narrows
This luxurious chest can be found on top of the giant mushroom tree that is located south on the map. Climb a nearby mountain high enough and glide on top of the tree.
Luxurious Chest 7: Nameless Ruins
Complete the Dainsleif chasm quest. Head to the teleport waypoint located at the Nameless Ruins and then climb the wall.
Descend through the gap on the floor to get to the middle of the area.
Drop down the tower to find the luxurious chest placed right next to the wall
Luxurious Chest 8
There is another luxurious chest available after you have completed the world quest “Wherefore Did the Spiritstone Descend“, where your goal is to purify the large crystal. First, complete the quest and then return to the same location where you have purified the large crystal. Jump from the top and glide down to find the last luxurious chest placed on the top of a pillar.