Automaton Front is Stage 4 of the Thunder Sojourn event in Genshin Impact. Learn how to play Automaton Front, how to defeat the Perpetual Mechanical Array, how to get all challenge rewards, and other information in this Thunder Sojourn guide!

Thunder Sojourn Event Guide
Stage 1	Stage 2	Stage 3	Stage 4

Automaton Front Stage Information

How to Unlock Stage 4

To unlock Stage 4 of Thunder Sojourn, you have to talk to Muzhen in Ritou and start ''Facing Distant Echoes.'' Complete the quest to begin the stage challenges!
Facing Distant Echoes Guide

How to Play Automaton Front

Automaton Front Event Guide

Where to Find the Automaton Front Domain

The Automaton Front Domain is located west of Araumi, at the base of a cliff and a waterfall. You'll see a Domain door at the location, which you interact with to enter!
Inazuma Map Guide

How to Start the Challenge

Go inside the Domain and interact with the Challenge Mechanism in the middle of the room. Prepare by eating food for buffs or by setting up constructs!

How to Beat the Mechanical Array

You can beat the Perpetual Mechanical Array by bringing your best Shield characters and damage-dealers! You'll also have an advantage if you know the Mechanical Array's attack patterns, so take a look at them in our guide:
Perpetual Mechanical Array Guide

Summon Electrograna for Thunder Dwelling and Nimbus Gems

Summon nearby Electrograna with the Thunder Sakura Boughs and stay in range of the Thunder Dwelling or Nimbus Gems for damage or battle buffs!

Device	How to Use
Thunder Dwelling	Use an Electrograna to charge the Thunder Dwelling up. Once fully charge, it will deal a wave of Electro DMG.
Nimbus Gems	Link with Nimbus Gems for buffs. 1 Link: Increases Energy Recharge. 2 Links: Increases Energy Recharge and deals more Elemental Burst DMG. 3 Links: Increases Energy Recharge, deals more Elemental Burst DMG, and unleashes a shockwave with each attack. These shockwaves have a CD.

Recommended Characters for Automaton Front

Best Parties for Automaton Front

Best Party

F2P Party

Character	Character Merits
Hu Tao	• Serves as your Main DPS. • High Charged Attack and Elemental Burst DMG. • Pyro attacks easily trigger Melt Reactions for bonus DMG.
Ganyu	• Serves as either your 2nd Main DPS or a Sub DPS. • Provide continuous Cryo application with Elemental Burst. • Cryo attacks easily trigger Melt Reactions for more DMG.
Kazuha	• Serves as a Sub DPS and Support. • Provides passive Swirl DMG. • Boosts Elemental Mastery for Hu Tao and Ganyu.
Zhongli	• Serves as your Shield Support. • Gives enemies debuffs. • Elemental Burst can petrify Ruin Sentinels.

Character	Character Merits
Noelle	• Serves as your Main DPS. • Provides Shields and light healing.
Xiangling	• Serves as your Sub DPS. • Provides passive Pyro DMG with Skill and Burst. • Can trigger Melt Reactions for more DMG.
Kaeya	• Serves as your Sub DPS. • Provides passive Cryo DMG with Burst. • Can trigger Melt Reactions for more DMG. • Provides Cryo Resonance for CRIT Rate.
Diona	• Serves as your Support. • Provides both Shields and heals. • Can trigger Melt Reactions for more DMG. • Provides Cryo Resonance for CRIT Rate.

Other Recommended Characters

	Recommended Characters
Main DPS
Sub DPS
Support

Automaton Front Rewards

Get Thunder Crystals

Objective	Rewards
Complete the Automaton Front challenge x1	x300

You will get 300 Thunder Crystals every time you complete the Automaton Front Domain Challenge. This means that you need to play through it a few more times to get all the rewards from the Event Shop, including Beidou!
Beidou Rating and Best Builds

How to Use Thunder Crystals

You can use the Thunder Crystals from the Automaton Front stage to purchase items from the Event Shop and claim your Free Beidou! Take a look at our Thunder Sojourn guide for a list of all shop items:
View Event Shop Items

Genshin Impact Related Guides

Thunder Sojourn Event Guide

All Thunder Sojourn Stages

All Genshin Impact Events

List of Current & Upcoming Events