Quick answer: Primordial Chaos Vessel is about 35 m from the Heart Pond Crossing bell, in the Mirage Estate. It Soul Tempers the Freezing Chaos.
Where to get Primordial Chaos Vessel
Primordial Chaos Vessel is a world pickup about 35 m from the Heart Pond Crossing bell. The Mirage Estate collectibles page covers the rest of the region.
Primordial Chaos Vessel item card
The item card reads:
Three currents of Sha-Chi still linger within this vessel, endlessly entwined, endlessly waxing and waning. Memories of days past have been discarded here as well.
Back then, Steel wasn’t yet so dominant, Chaos not yet so withdrawn, and Frost not yet so neurotic. The three of them trained together and got into trouble together, turning the whole sect upside down. Their master always took their side, saying the three of them balanced one another, and the noise was half the point.
Its effect line reads: “Used to Soul Temper the Freezing Chaos.”
What Primordial Chaos Vessel does
| Weapon | Upgrade | Cost |
|---|---|---|
 Freezing Chaos | Threefold Resonance | 5,000 Remnant Dust + Primordial Chaos Vessel |
The Threefold Resonance effect reads “Using Threefold Shift greatly increases damage dealt and Sha-Chi Depletion for 5 seconds.”
In Pangzhen, deliver the Vessel and 5,000 Remnant Dust to Myst at the Order’s underground tavern. For the full procedure, follow the walkthrough on how to Soul Temper.
