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To get the Hydrological Studies of Byakuyakoku book in Genshin Impact, you will need to complete "Date's Challenge'' World Quest in Enkanomiya. It is one of the five lost books for the Collection of Dragons and Snakes quest. Find out its location, how to use, and where to find the quest here!
| Lost Books for Collection of Dragons & Snakes | |||||
|---|---|---|---|---|---|
| The Serpent and Drakes of Tokoyokoku | In the Light, Beneath the Shadow | Hydrological Studies in Byakuyakoku | |||
| Experimental Records | Before Sun and Moon | ||||
You can get the Hydrological Studies of Byakuyakoku book by completing Date's Challenge World Quest in Enkanomiya. After earning two Medals of Recognition from the quest, talk to Date and open the chest to claim the book!
| Objectives | |
|---|---|
| 1 |  Solve the Evernight Temple Maze and talk to Date. Check out our walkthrough for the puzzle here! |
| 2 |  Open the gate to a puzzle in The Serpent's Heart with Date's Key. |
| 3 |  Complete the puzzle to get the second Medal of Recognition. |
| 4 |  Return to Date, then open the secret room with a Precious Chest that contains the book! |
Full Date's Challenge Quest Walkthrough
Hydrological Studies in Byakuyakoku book is needed for the Collections of Dragons and Snakes World Quest. It's one of the five lost books you need to collect for its completion!
Collections of Dragons and Snakes Quest
 Hydrological Studies in Byakuyakoku
|
Rarity | 1 |
|---|---|---|
| Type | Quest Items | |
| Effect | None |
This text records the geography and hydrology of Byakuyakoku. With the sealing of the depths and the emigration of the people of Watatsumi, as well as the passing of long years, this book is now useless.
Hydrological Studies in Byakuyakoku Book Location and How to Use
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