The Universal Matrix, Great Tomb of the Nameless Titan, contains numerous collectibles, one of them are the Nymphs, who are scattered through the location in Honkai: Star Rail. Collecting them will grant you a special reward from the Wandering Garmentmaker, so let’s not waste any time and jump into finding all 10 Nymphs in the game.
Nymph #1: Center Bug

The first Nymph, the Center Bug, is located near the entrance to the Universal Matrix on the second floor in Honkai: Star Rail. Head to the location shown in the image above. When you’re there, look up to find the first one at the top of the room. Interact with it to catch it and add the Nymph to your collection.
Nymph #2: Twin Bug

From the location of the first one, turn back and head to the next area through the large door in the middle. In the next area, go left, then perform a “miracle” to switch to Evernight. Once you’ve done that, go down to the floor below, then look up at the location as shown in the image above to find the second Nymph, the Twin Bug.
Nymph #3: Dialectics Bug

From the location of the second one, head back up and perform another “miracle” to find the third one, called the Dialectics Bug, on the wall to the left. Head to the location as shown in the image above, and you’ll find the third one.
Nymph #4: Fast Charging Bug

From the wall where the third one is located, turn right and follow the path ahead until you reach the machine to operate the floating platform. Interact with it, then use the floating platform to descend to the floor below. Once you’re down there, go straight ahead and access the next area via the door in front. In the next area, continue straight and just before the door, turn right on the platform to catch the fourth one, called the Fast Charging Bug.
Nymph #5: Concord Bug

From the fourth location, head through the door that you were about to enter just before collecting the Fast Charging Bug. In the next area, turn left and use the Hidden Passage operator to the next platform straight ahead. In the next area, go left down the glowing blue bridge, then turn right and use the floating platform to descend to the platform below.
Once you’ve reached down, follow the path straight ahead into a room. Inside the room, you’ll find the fifth one, called the Concord Bug, to the left, on the glowing, blue part of the floor.
Nymph #6: Gazing Bug

From the same location, turn right and use the floating platform inside the next room to ascend to the floor above. Once you’re there, head straight ahead to the Hidden Passage operator to reach the next platform. At the next platform, follow the glowing blue bridge to reach the area as shown in the image above. There, you’ll find the sixth one, called the Gazing Bug, on top of a platform. All you need to do is look up.
Nymph #7: Glitch Bug

Next, use the Tidal Cooling Sector: Entrance to head to the next area. You’ll find an X-shaped door in front of you. Follow the path ahead inside the door, and as soon as you turn left, you’ll find the seventh one on the floor, named the Glitch Bug.
Nymph #8: Hardware Bug

Once you’ve collected the seventh one, head to the Tidal Cooling Sector: Connection Point to reach the next area. When you’re there, turn right and follow the path ahead. You’ll find the eighth one, named the Hardware Bug, on the right, behind the triangular object, at the location as shown in the image above.
Nymph #9: Silencer Bug

Next, you must go to the Demiurge Matrix inside the Universal Matrix. Once you’re there, climb the short pair of stairs ahead, then turn left to find the ninth one, named the Silencer Bug, at the edge of the platform as shown in the image above.
Nymph #10: Appraisal Bug

From the same location, turn back and head down the pair of stairs, through the door straight ahead, next to the Demiurge Matrix. As soon as you enter through the door, turn left, and you’ll find the final one, named the Appraisal Bug, behind a pillar.
Reward For Collecting All 10 Nymphs

To collect the reward for obtaining all 10 Nymphs, head to the Tranquil Tomb Gate. You’ll find the Wandering Garmentmaker on the right. Interact with the Garmentmaker and inform her of all the Nymphs you’ve collected, and you’ll be rewarded with a 3-Star Portentous Goldwoven: Universal Matrix for your troubles.
That’s all you need to know about collecting all 10 Nymphs in the Universal Matrix in Honkai: Star Rail. The Universal Matrix is home to a multitude of collectibles, and if you’re looking for more treasures, check out our comprehensive guide on All 16 Treasure Chest Locations inside this area in the game.