How to solve the “Seiraimaru” Boat Relay Stone puzzle in Genshin Impact

The maze-like interior of the "Seiraimaru" boat is home to a plethora of puzzles, including a Relay Stone puzzle that involves three Relay Stones and a lot of Electro lines. To access this puzzle, you first need to complete the Memory Tile puzzles that start at the entrance of the boat.

After the two Memory Tile puzzles are done, a hole in the ship's wall will open (on the same floor as the second puzzle), leading to a large expanse that houses the Relay Stone puzzle.

The first thing you'll find is a shipwreck with a Phase Gate and an inactive Thunder Sakura Bough. Use the Phase Gate to traverse the area—make sure it's facing the direction you want to travel to. Your goal is to obtain three Relay Stones and place them in the same locations as prescribed in the images below.

Related: How to solve the Light-Up Tile puzzle in Amakumo Peak Genshin Impact

The leftmost Stone should be on top of a protruding plank at the edge of the ship. See the below image for a clearer reference of its location.

It's important that all the Relay, Cumulation, and Discharge Stones are connected to each other by the Electro lines. If they are not, then make micro-adjustments to the Relay Stones' positions until they're all connected.

Relay Stone Locations

First Relay Stone

Look straight ahead from the Phase Gate on the shipwreck and turn on Elemental Sight. You'll find a breakable Electro Rock Pile beside a Thunder Sakura Bough. Approach it, and break the Rock Pile to reveal another Phase Gate and a Relay Stone.

Second Relay Stone

From the location of the first Relay Stone, pick up an Electrograna from the Thunder Sakura Bough, then climb up the cliff to find a Thunder Barrier. Enter it, and pick up the second Relay Stone.

Third Relay Stone

On the location of the first Relay Stone, pick up an Electrograna from the Thunder Sakura Bough and then turn to the side—you'll find another Thunder Barrier. Enter it to pick up the third Relay Stone.

Luxurious Chest Reward Location

When all the Relay Stones have been placed in the right positions, indicated by the connection among all the Stones, you'll hear a slight rumbling sound. Jump down to the bottom of the terrain and follow the Chest locator that will appear on your screen. This will lead you to a hole in the wall.

Upon entering, defeat the three Ruin Sentinels to unlock the Luxurious Chest. The Electro Seelie in the area will activate the inactive Thunder Sakura Bough in the shipwreck, which you can use to claim an Electroculus high up in the sky (if not previously claimed).

Check out our guide on Raiden Shogun birthday, lore, & age in Genshin Impact to know more about Ei's alter ego.