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 in Genshin Impact
Burning Firestone #1
The first Burning Firestone is obtained during a cutscene after reaching Tonatiuh. Bona's companion, the Little One, will collect it. Players must then follow the Little One, raise a lift using a nearby mechanism, interact with the Saurian, speak with Bona, and watch another cutscene.
Burning Firestone #2
This Firestone is located on the northeastern isle. Players must manipulate two floating isle mechanisms, cross an extended bridge, raise a lift, follow the Little One to the Firestone, collect a Common Chest, activate a mechanism, climb to an upper level, defeat an enemy, collect an Exquisite Chest, open a gate, descend to the Saurian, open a locked door, and return to the Altar of Primal of Flame.Burning Firestone #3
To obtain the third Burning Firestone, manipulate the right and northern floating isle mechanisms, cross the bridge to the northern isle's lower level, follow the Little One, observe the Secret Source Sentinel move the Firestone to the southwestern isle, reach the northwestern edge, transform into a Qucusaurus, fly to a Pyroculus, activate a tower mechanism, fly to an unlocked door, use an elevator, interact with the Saurian, follow it, activate a lift, and return to the Altar.Burning Firestone #4
The final Burning Firestone is on the northwestern isle's upper level. Cross the northwestern bridge, use Bona to adjust the bridge, glide to the northern isle's upper level, lower a lift, follow the Little One, return to the Altar, defeat enemies, return to the Saurian, collect a Precious Chest, and return 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. The Dragon of the City of Flowing Ash then appears, leading players to the Nursery of Nightmares to complete The Other Side of the Sky Quest and earn 50 Primogems.
