In Genshin Impact, after assisting Bona in purifying the Abyssal Corruption from the Chu'ulel Light Core, players must help her locate the Primal of Flame. Once found, Travelers must offer two Pyrophosphorites (obtained during the Palace of the Vision Serpent Quest) to the Altar of Primal of Flame. This offering opens a path to Tonatiuh, a floating island above Ochkanatlan’s Cradle of Fleeting Dreams. Reaching Tonatiuh completes the To the Sky-Road Quest and begins The Other Side of the Sky Quest, requiring the collection of four Burning Firestones to acquire the Jade of Return.
How to Obtain the Four Burning Firestones
Burning Firestone #1
The first Burning Firestone is obtained after reaching Tonatiuh. Complete the following:
- Reach Tonatiuh and wait for the cutscene with Bona to conclude. The Little One will collect the first Firestone.
- Follow the Little One to the bridge, activating the nearby mechanism to raise the lift.
- Interact with the small Saurian and speak with Bona. Another cutscene will play.
Burning Firestone #2
The second Burning Firestone is on the northeastern isle. Follow these steps:
- Rotate the right and left floating isle mechanisms.
- Cross the extended bridge to the east and raise the lift.
- Follow the Little One to the Firestone. Collect a Common Chest along the way.
- Activate the mechanism to the right of the Firestone, climb the spawned platforms, defeat the enemy, and open an Exquisite Chest.
- Use the mechanism behind the chest to open a gate.
- Descend to the small Saurian, unlock the door, and tell the Little One, “Let’s return to the altar!”
- Return to the Altar of Primal of Flame.
Burning Firestone #3
To obtain the third Burning Firestone:
- Rotate the right and northern floating isle mechanisms.
- Cross the bridge to the northern isle's lower level and follow the Little One.
- Observe the Secret Source Sentinel carry the Firestone to the southwestern isle.
- Proceed to the northwestern edge, inhabit a Qucusaurus, and fly towards the Pyroculus.
- Activate the tower mechanism, transform into a Qucusaurus, fly to the unlocked door, and use the elevator to return to the upper level.
- Interact with the small Saurian, follow it, activate the lift, and return to the Altar of Primal of Flame.
Burning Firestone #4
The final Burning Firestone is on the northwestern isle's upper level:
- Cross the northwestern bridge, requesting Bona to tilt it upwards.
- Glide to the northern isle's upper level. Lower the lift and follow the Little One.
- Tell the Little One, “Let’s return to the altar!” Defeat the enemy, and tell the Saurian to return to the altar.
- Collect a Precious Chest and go to the Altar of Primal of Flame.
Offering all four Firestones to the Altar completes The Flowing Primal Flame Quest, triggering a cutscene where the Jade of Return transforms into a Golden Entreaty. The Dragon of the City of Flowing Ash will then appear. Follow the Taunted One to the Nursery of Nightmares to complete The Other Side of the Sky Quest and receive 50 Primogems.
