This guide details how to obtain the four Burning Firestones in Genshin Impact's "The Other Side of the Sky" quest, following the "To the Sky-Road" quest. After aiding Bona with the Chu'ulel Light Core, players must locate and offer two Pyrophosphorites to the Altar of Primal of Flame to access Tonatiuh. Gathering the Firestones unlocks the Jade of Return.
Obtaining the Burning Firestones:
Burning Firestone #1:
- Reach Tonatiuh.
- Complete the cutscene with Bona; the Little One will acquire the first Firestone.
- Follow the Little One to the bridge, activating the lift mechanism to cross.
- Interact with the Saurian and Bona.
- Complete another cutscene.
Burning Firestone #2:
- Rotate the right and left floating isle mechanisms.
- Cross the extended bridge eastward, raising the lift.
- Follow the Little One to the second Firestone, collecting a Common Chest en route.
- Activate the mechanism near the Firestone, climbing the spawned platforms.
- Defeat the enemy and collect an Exquisite Chest atop the tower.
- Activate the mechanism to open the gate.
- Descend to the Saurian, unlock the door, and request a return to the altar.
Burning Firestone #3:
- Rotate the right and northern floating isle mechanisms.
- Cross the bridge to the northern isle's lower level, following the Little One.
- Observe the Secret Source Sentinel carrying the third Firestone to the southwestern isle.
- Proceed to the northwestern edge, ride a Qucusaurus, and fly towards the Pyroculus.
- Activate the tower mechanism, transform into a Qucusaurus, and fly to the unlocked door.
- Use the elevator to return upstairs, interact with the Saurian, and follow it, activating the lift.
- Return to the Altar of Primal of Flame.
Burning Firestone #4:
- Cross the northwestern bridge, using Bona to adjust its angle.
- Glide to the northern isle's upper level, lowering the lift.
- Follow the Little One, requesting a return to the altar.
- Defeat the enemies, and ask the Saurian again to return to the altar.
- Collect a Precious Chest before returning to the Altar.
Offering all four Firestones to the Altar completes "The Flowing Primal Flame" quest, transforming the Jade of Return into a Golden Entreaty. This triggers a cutscene with the Dragon of the City of Flowing Ash, leading to the Nursery of Nightmares and completion of "The Other Side of the Sky" quest, rewarding 50 Primogems.
