What can you do as a free member?

Member benefits illustration

Create your free account today and unlock all our premium features and tools to enhance your gaming experience.

Member benefits illustration

Create your free account today and save articles to your watchlist and get notified when they're updated with new information.

Member benefits illustration

Create your free account today and save your favorite games for quick access later, synced across all your devices.

Member benefits illustration

By creating a Game8 account and logging in, you'll receive instant notifications when someone replies to your posts.

Comment rating feature illustration

By creating a Game8 account and logging in, you can make use of convenient features in the comments section, such as rating and sorting comments.

Premium archive feature illustration

By creating a Game8 account and logging in, you can access Premium articles that are exclusively available to members.

Site Interface

Guest
Free Member
Article Watchlist
Game Bookmarks
Cross-device Sync
Light/Dark Theme Toggle
User Profiles
Direct Feedback
Comment Rating
Premium Articles

Game Tools

Guest
Free Member
Interactive Map Access
Interactive Map Pins
Interactive Map Comments
Interactive Map Pins Cross-Device
Check List
Event Choice Checker
Deck Builder Cross-Device
Message Board Notification
Message Board Cross-Device
Build Planner
Stat Calculator
Diagnostic Tool
Weapon/Armor Wishlist

Want more information?Learn more

Arknights: Endfield

Purity Reveals the Stubborn Stone Main Mission Guide

Add to Watchlist

✪ Check Game8 Endfield Twitter for daily tips!
★ Exclusive: Endfield's Connection to Arknights
★ Ver. 1.1: Release Date | Livestream | Maintenance
★ Tangtang (Build | Banner) | Rossi (Build | Banner)
★ Best Builds: Yvonne | Last Rite | Laevatain
★ Hot: Essence Tool | Blueprint | Best Dijiang Setup

Arknights Endfield - Purity Reveals the Stubborn Stone

Purity Reveals the Stubborn Stone is a Main Mission in the The Long Feud quest series of Arknights: Endfield. Check out how to unlock this mission, its walkthrough, and all its rewards in this guide!

Previous Mission Next Mission
Ripples Spread Throughout the Flow Twas One River That Gave Us Drink

List of Contents

Purity Reveals the Stubborn Stone Quest Information

Purity Reveals the Stubborn Stone Quest Details

Mission Type Main Mission
Quest Line The Long Feud
Chapter Chapter 2 - Process 3
Location Qingbo Stockade, Wuling

Purity Reveals the Stubborn Stone is the eighth quest under the The Long Feud mission series. This quest is under Chapter 2 - Process 3 of the main story and is located in Qingbo Stockade.

The Long Feud Quest

How to Unlock Purity Reveals the Stubborn Stone

Arknights Endfield - Ripples Spread Throughout the Flow

How to Unlock Purity Reveals the Stubborn Stone is unlocked after completing Ripples Spread Throughout the Flow from The Long Feud quest series with no level restriction.

Ripples Spread Throughout the Flow Guide

Purity Reveals the Stubborn Stone Walkthrough

  1. Go to the Riverbank
  2. Go to the Hideout of Ruan Yi's Loyalists
  3. Defeat Ruan Yi's Loyalists
  4. Use the Control Panel and Help Tangtang Reach the Elevator
  5. Attack the Device to Rotate the Pipes and Provide Water Power
  6. Meet Up with Tangtang
  7. Search the Room
  8. Parlay With Ruan Yi's Loyalists
  9. Defeat Ruan Yi's Loyalists Again
  10. Go to the Ancestral Spring

Go to the Riverbank

Purity 1
Head to Qingbo Stockade and locate the riverbank by following the quest marker. There will be a small cutscene that will play, and the next objective will follow suit.

Qingbo Stockade Locations

Go to the Hideout of Ruan Yi's Loyalists

Purity 2
Interact with Tangtang to start the next objective. You will be transported to a different section of the map after another cutscene. Start running through the platforms and follow the quest marker throughout the run.

There will be a short sequence where Tangtang activates a gate to get you through a portion of the stockade. Follow through the stockade and exit to enter another cutscene with some enemies.

Tangtang Banner Schedule and Dates

Defeat Ruan Yi's Loyalists

Purity 3

You will enter a forced combat sequence with some of Ruan Yi's Loyalists again. Clear them out and head to the next section of the Stockade.

Use the Control Panel and Help Tangtang Reach the Elevator

Purity 4

After the battle, follow the Objective Marker to find the Control Panel and help Tangtang get through the area, but Tangtang won't be able to proceed due to the elevator not having power.

Attack the Device to Rotate the Pipes and Provide Water Power

Purity 5
Press the panel again to rotate the bridge to your position and through the power device to the left. Hit the device with your attacks to align the water pipes and allow it to provide power for the elevator.

Meet Up with Tangtang

Purity 10

You can meet up with Tangtang afterwards by using the grapple hook to reach her on the upper platform. You two will then head to a seemingly ornate office, where a cutscene plays out.

Search the Room

Purity 6
You can then start searching the room by interacting with the interactables marked for interaction, each telling something about Ruan Yi's exploits.

Tangtang will ask for help opening a locked crate. Approach her, and a cutscene will play. Once done, keep advancing to open the next section.

Parlay With Ruan Yi's Loyalists

Purity 7
You will enter a short forced walking session after this, and a cutscene regarding the fate of the Stockade. Once the cutscene ends, you will enter another combat section with Ruan Yi's Loyalists.

Defeat Ruan Yi's Loyalists Again

Purity 8
You will be surrounded by several Loyalists at the start of the fight, but you will be using Tangtang primarily for this combat section, so use her abilities to your advantage!

Once all enemies are taken care of, you will reach another lengthy cutscene about the aftermath of the quest's events. Your rewards will be given after this fight, but the quest itself is yet to end.

Go to the Ancestral Spring

Purity 9
You will head back near the Ancestral Spring after the prior cutscene. Follow the quest markers to find Tangtang, after which, you can watch the conclusion of this mission and head to the next one.

Purity Reveals the Stubborn Stone Quest Rewards

Total Item Rewards

Total Quest Rewards
#T-CredsImage
T-Creds x10000
#ProtohedronImage
Protohedron x3
#OrigeometryImage
Origeometry x2
#Arms INSP SetImage
Arms INSP Set x2
#Advanced Cognitive CarrierImage
Advanced Cognitive Carrier x1

This quest also provides 400 Operational EXP upon completion.

Arknights: Endfield Related Guides

Main Missions Slim

List of All Main Missions

All Main Chapters and Processes

Prologue
Process: Awakening
Chapter I: Process I - The Broken Lands
Break the Siege Valley Reboot
Rally and Unite Westward into the Vale
Secure Sanctuary Building an Outpost
Through the Haze Fort Showdown
Chapter I: Process II - The Turbid Heavens
Paving the Way Work Preparation
Maintenance Progress -
Chapter I: Process III - Path of Ascension
The Mission Continues Cross the Science Park
Park Way Party Walk in the Park
Mystery in the Building Down the Hill
Shattered Veins Lodespring Crossing
Cradle of Ages Eve of Battle
Chapter I: Process IV - Smoking Embers
Entering the Endgame Counterstrike Brewing
Scaldings of Utjug Frontline Rush
Undying Cinders Temporary Peace
Mysterious Signal Conference of the Four
Work Preparation -
Chapter II: Process I - Lost in the Marsh
Arrival at Wuling Stumbling Into Qingbo Stockade
Destination Wuling -
Chapter II: Process II - The Way of Water
A Glance of Astonishment A Breeze Away
Of Grace and Gentle Might The Surging Tide
Where Danger Sleeps -
Chapter II: Process III - The Long Feud
Unexpected Attack Deep in the Mire
The Flow Splits Course Surging From a Withered Spring
A River Restless in Still Winds Another Wave Comes Crashing In
Ripples Spread Throughout the Flow Purity Reveals the Stubborn Stone
Twas One River That Gave Us Drink -

Comment

Post (0 Comments)

Author

Arknights: Endfield Walkthrough Team
This article was created by Game8's elite team of writers and gamers.
    Leave feedback(Login required)
    Tell Us More About You!

    Premium Articles

    Rankings

    Popular Articles
    Message Board
    • We could not find the message board you were looking for.

    Gaming News

    Popular Games

    Recommended Games

    All rights reserved

    Copyright © 2022 - 2025 GRYPHLINE. All Rights Reserved.

    The copyrights of videos of games used in our content and other intellectual property rights belong to the provider of the game.
    The contents we provide on this site were created personally by members of the Game8 editorial department.
    We refuse the right to reuse or repost content taken without our permission such as data or images to other sites.

    Arknights: Endfield Walkthrough & Guides Wiki

    Quick Access
    Guide Index

    Tier Lists and Meta Guides

    Tools

    Redeem Codes

    Recommended Guides

    Characters Guides

    All Character Builds

    All Character Team Comps

    All Upcoming Characters

    All Non-Playable Characters

    Characters By Rarity

    Characters by Role

    Characters by Weapon

    Characters by Element

    Characters by Gender

    Weapons

    Upcoming Weapons

    Weapons by Type

    Weapons by Rarity

    Interactive Map

    Valley IV

    Wuling

    AIC (Factory)

    AIC Tips and Tricks

    AIC Facilities by Type

    All Missions

    All Main Missions

    All Side Missions

    All Operator Side Missions

    All Exploration Missions

    All Daily Tasks

    Items

    Banners

    Etchspace Salvage

    Umbral Monument

    Those Forsaken By the Land

    Inorganic Construct

    Searing Scars

    Delver of the Cryptic

    Cryptic First Revealed

    Grotto Survey

    Gear and Gear Sets

    Gear by Type

    Gear by Rarity

    Regional Development Guides

    Events

    Bosses

    Enemies

    Enemies by Type

    Message Boards

    Tips and Tricks

    Achievements

    Latest News and Updates