The Tale-Telling Heart in Genshin Impact is a World Quest in Blue Amber Lake, Nod-Krai. During the mission, you must collect Stellafruits, complete Sergeant Octopus's trials, wake up Colonel Iron Whale, and unlock an underground area. Completing the quest will give you several chests, Primogems, and unlock a hidden achievement. Additionally, you will get access to one of the hidden teleport waypoints in Nod-Krai.
Here's a simple guide on how to start and complete The Tale-Telling Heart quest in Genshin Impact.
Genshin Impact: The Tale-Telling Heart quest location and guide
The Tale-Telling Heart quest location

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The Tale-Telling Heart quest automatically starts when you visit Blue Amber Lake for the first time.
Collect Stellafruit, deliver them to Sergeant Octopus, and pass the trial

You must collect 24 Stellafruits. They can be found inside the blue flowers around the Blue Amber Lake. Some of the flowers are closed, so you must open them using kuuvahki energy.

After collecting all the Stellafruits, offer them to both Sergeant Octopuses to start their trials.
Trial #1
In the first trial, you must aim and throw the Unipolar Crystronites at the flying targets and Stellafruits when they are lined up properly. The goal is to destroy 99 Stellafruits within the time limit. Completing the challenge will give you a Precious Chest and an Exquisite Chest.
Trial #2
You must destroy 99 Stellafruits in the second trial as well. However, this time you must stand inside the blue rings to jump higher to destroy the Stellafruit and complete the challenge. Always avoid the red rings because they will prevent you from jumping, and be careful of the electrical waves. You will get two more chests for completing the challenge.
Return to Colonel Iron Whale

Once you've completed both trials, climb the large whale structure.
Head to the designated location and find the missing parts

Follow the quest navigation until you encounter a group of treasure hoarders. Defeat them and pick up the lever next to the junk.
Also read: Genshin Impact Priorities First quest guide
Activate the lift and enter the workshop below

Install the lever on the lift and activate it to go to the workshop below.
Follow Huginn and look for clues

Go deeper into the cave to find a Messily Scribbled Notes near an Exquisite Chest and interact with it.
After the cutscene, choose one of the options for Huginn and then go to the other hole to catch the mole. Next, approach the plants affected by kuuvahki and use its energy to destroy the wall.
Stop the out-of-control machine

You will find a hidden teleport waypoint in the Abandoned Workshop, which will automatically unlock during the cutscene. Once that is done, avoid the electrical waves and turn off the out-of-control machine.
Follow Huginn and find a way to return to the surface

Follow Huginn to find more clues and interact with the glowing spot on the ground. Doing so will spawn a robot. Next, pat it and use the kuuvahki energy to destroy the wall before jumping down to use the lift to return to the surface.
Also read: Genshin Impact - The Stress of Changing Careers quest guide
Wake Colonel Iron Whale up

Return to Colonel Iron Whale and install the spare parts to wake it up.
Ride the "Aurora" and reach the destination

Finally, ride the "Aurora" in kuuhenki form and reach the destination. This will complete The Tale-Telling Heart quest in Genshin Impact.
As a reward, you will get 50 Primogems and the When the Aurora Shines achievement.
Check out our other Genshin Impact Nod-Krai guides:
- All Nod-Krai Shrine of Depths locations
- Luna I quest list and their locations
- Best weapons for Lauma
- Blues of the Old World quest guide
- How to unlock Luna treasure compass?
- How to unlock Nod-Krai reputation system
- Genshin Impact Luna I achievements list
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