The Riddle of Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

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The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

The Riddle of the Sky and Sea in Genshin Impact is the third mission of the quest chain “Journey to the Mysterious Island”, which is part of the Chronicles of the Metzli Tribe, “Where the Springs Return”. Together with your allies, you will explore the Dragon Spirit Doors and save Viramdra. To find out how to find the way to the mysterious island, check out our guide.

The Riddle of the Sky and Sea Quest Walkthrough

How to Start

The quest should appear in your journal immediately after completing the previous mission, “Koholasaur Encounter.” If it doesn't, try logging out and logging back in 20-30 minutes later.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

Go to the location that Mualani discovered through her analysis

Head southeast from the Archon Statue in the waters of Ameyalco. Viramdra will suggest that the stone platform where you find yourself can contain Dragon Spirit Doors, or Phlogiston Nodes – ancient devices that will help you find the mysterious island.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Node

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Node

Activate the First Phlogiston Node

Go to the island south of your location. If you have opened a teleport there in advance, you can immediately move to it.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Node

You can also possess the Koholasaurus Soul Beacon to reach the island faster.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Node

Climb to the top of the hill. You will find the first node, but it is too high.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Node

Break the mountain of rocks next to the stone pillar.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Node

Activate the blue mechanism by attacking it.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Node

Follow the path that opens and touch the node at the top.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Node

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Node

Activate the Second Phlogiston Node

From the first node, fly southwest. Defeat a couple of Hilichurls and touch the second node.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

Complete the Trial of the Spiritual Path

After gaining control of Mualani, use her Elemental Skill.

The Riddle of the Sky and Sea in Genshin Impact: How to use phlogiston knot

Move along the spiritual paths, jumping over obstacles. When the path ends, use the jump and turn right to move to the next path.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

When a new path appears, jump to the left.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

Use the Phlogiston Node to change routes

As the Traveler, go up to the next Phlogiston Node and touch it.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Node

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

The path you will find yourself on is a closed circle, so at the right moment, jump to the path on the left.

The Riddle of the Sky and Sea in Genshin Impact: how to use a phlogiston knot

After passing several obstacles, turn left again.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Node

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Node

Use the Phlogiston Node Again to Change Routes

Touch the third node as the Traveler.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

Once you find yourself on the new path, jump to the right road as quickly as possible. Overcome a couple more obstacles and reach the end.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

Explore the Whirlpool with Mualani

Spiritual paths and map clues will indicate that you can reach the mysterious island by entering a huge whirlpool. Viramdra will decide that this is dangerous – to prove otherwise, head to the northern edge of the island.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

While you are discussing the dangers, Viramdra will decide to test his own theory, and the water will carry it away.

Save Viramdra

You have to swim to the scientist in one and a half minutes. Activate Mualani's E-Shka and follow the phlogiston seeds, jumping over obstacles and avoiding whirlpools.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

There will be blue circles in front of some obstacles – stand on them to jump higher and collect seeds.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot node

Help Mualani set up camp

Once Viramdra is saved, the whirlpools will disappear. Your guide will suggest setting up camp and resting. Approach Mualani and the scientists and set up a tent.

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

The Riddle of the Sky and Sea in Genshin Impact: How to Use the Phlogiston Knot

Have a get-together by the fire and talk about the purpose of your journey. This will complete the quest.

Rewards

  • Exp x450
  • Pestilence x38100
  • Exp Books x4
  • Enhancement Ore x8

Right after completing the quest, you can proceed to the next part, “The Truth About the Mysterious Island.”

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