Where Once There Was a Calculation Array is a child quest for Genshin Impact 5.5. Read about how to start, walkthrough, answers, how to unlock, & rewards.
Table of Contents
Where Once There Was a Calculation Array - How To Unlock & Location
Unlocks During The Chronicler of the Crumbling City Quest

Where Once There Was a Calculation Array is a child quest in the Chronicler of the Crumbling City quest. It is the one of the many quests within that questline.
Chronicler of the Crumbling City Quest GuideRelated To The Golden Entreaty Questline

Chronicler of the Crumbling City is part of the quest series about the search for the Golden Entreaty to help Little One. The entire questline is rather lengthy and it's recommended that to do the first two (2) parts of it before starting with The Way Into the Mountain.
Golden Entreaty Recommended Quests | |
---|---|
Part 1: Between Pledge And Forgettance | Part 2: Lost Traveler In The Ashen Realm |
Where Once There Was a Calculation Array - Walkthrough & Tips
Where Once There Was a Calculation Array Walkthrough Guide
- Help the Secret Source Servant surrounded by enemies
- Follow it inside the building and fight off the enemies
- Resonate with the cannon and shoot down the Abyssal Corrosion spheres to clear the Abyssal corrosion
- Activate the mechanism
Where Once There Was a Calculation Array - Rewards
Rewards 1 Precious Chest, 1 Exquisite Chest, and 1 Common Chest

Upon interacting with the mechanism, a total of three (3) chests will be rewarded. You will also obtain a Phlogiston Unit, a quest item related to this questline.
Unlocks As The Next Part For In Search Of A Hidden Heart Subquest

After clearing Where Once There Was a Calculation Array child quest and the other child quests, Travelers will immediately unlock the next part for the In Search Of A Hidden Heart Subquest.
In Search of a Hidden Heart Quest GuideGenshin Impact - Related Quest Guides

Tap To Jump To Categories | |
---|---|
▼Latest Quests | ▼Archon Quests |
▼World Quests | ▼Story Quests |