Where Once There Was a Calculation Array is a pivotal quest in the Chronicler of the Crumbling City series within Genshin Impact. This adventure unfolds in the breathtaking Ancient Sacred Mountain, nestled below the awe-inspiring Giant Volcano of Tollan.
Upon completing the The Frozen, Rekindling Land quest, players will delve into the depths of the Ancient Sacred Mountain. Here, they will encounter a significant character, the Secret Source Servant, who will unlock several sub-quests essential for progressing through the Chronicler of the Crumbling City storyline, including the quest in focus, Where Once There Was a Calculation Array.
Step-by-Step Walkthrough for “Where Once There Was a Calculation Array”
To initiate the Where Once There Was a Calculation Array quest, speak with the Secret Source Servant, a critical element encountered during the In Search of a Hidden Heart quest.
Once the quest commences, a map marker will guide you to your next destination. Head to the teleportation point adjacent to the Secret Source Servant to start your journey southward.
Previous Quest: Genshin Impact: Once, the Sacred Seat of Judgement Quest Guide
Upon your arrival, you will encounter another teleport point along with a boss bar that indicates the This Region’s Abyssal Corrosion Level. Be prepared to fight as a group of rifthounds will assault a small Secret Source Servant. Defeating them is crucial to advancing the quest.
Once the rifthounds are vanquished, follow the rescued Secret Source Servant down into a cave that houses a corrupted Secret Source Dragon. Clear the area of additional rifthounds to lift the abyssal corruption affecting the dragon.
After a successful battle, the Secret Source Servant will reawaken the dragon. You will then have the opportunity to resonate with the Secret Source Dragon and unleash explosive attacks on the Oozing Cores. Ensure to obliterate all Oozing Cores to fully reanimate the dragon before you exit the cave.
While returning, you will encounter yet more Oozing Cores to destroy. Once accomplished, the Secret Source Dragon will glide down, and you’ll need to approach the altar. Click Start to completely eradicate the abyssal corruption from the area.
Congratulations! You have successfully completed the Where Once There Was a Calculation Array quest in Genshin Impact. As a reward, you will receive one unit of Phlogiston and three loot chests containing items (1 x Precious, 1 x Exquisite, and 1 x Common).
After finishing this quest, you will unlock yet another challenge, the Where Once Force Was Reversed quest in Genshin Impact.