Genshin Impact - How to Find Missing Crystalline Cores

gamespot.com:

The Summertime Odyssey event has provided new daily content for Genshin Impact's seasonal celebration since it began, and now, another part of the Golden Apple Archipelago questline is available to complete. After you've finished the quests found inside each island's mirage, it'll be time for a sort of treasure hunt. There's a manuscript with directions to follow, but they can be a bit confusing. So, for those who need a bit of help, here's how to get the missing Crystalline Cores.

There are three Crystalline Cores in total, and three separate puzzles on three different islands need to be solved in order to obtain them. We'll go through each island one by one from the closest to the farthest.

As you may have noticed in Persikov's manuscript, there are devices set up on each island that can be turned either to left or to the right. On this island, there are two such adjustable devices. Using the image below for reference, start with the device on the left side of the stone pillar.

Turn it to the right twice and to the left once. Then, turn the other device to the right once and to the left twice. The Crystalline Core will float down from its little cage after the puzzle has been solved. Grab it, then go to the second island.

This island contains three devices that need to be adjusted in order to get to the Crystalline Core: one near a tower, one near a tent, and one near some rocks. Stand in a similar position as Kokomi in the image below to follow along easily.

Look to your right and turn the device next to the tower to the left twice, then right once. Next, turn the device near the tent to the right, then left. Finally, the device next to the rocks needs to be turned right, then left, then right again. Collect the core