Mutual Security Enhancing Simulation is a tower defense and assault event in Genshin Impact 4.7. See how to play the Security Enhancing Simulation event, how to get the free Cloudforged bow, how to unlock the event, and all rewards here!

Mutual Security Enhancing Simulation Guides
Event Guide	Assault	Defense

Mutual Security Enhancing Simulation Schedule

Security Simulation Stages and Unlock Dates

How to Play Mutual Security Enhancing Simulation

Complete the Commanders and Wargames Unlock Quest

Go to the Bridge Entering Liyue Harbor

To start the Mutual Security Enhancing Simulation event, go to the bridge leading into Liyue Harbor and complete the Commanders and Wargames quest! Simply talk to Su Ding to complete the quest.

Complete Assault Scenarios

In Assault Scenarios, players need to place Combat Units strategically to defeat enemies and capture towers in the opposite base. Players can only choose 6 Combat Units and 1 Leadership Skill to be used in a stage.

Different unit types are stronger or weaker against one another, so make sure to analyze your opponents and the battlefield thoroughly.

Assault Scenarios Event Guide

Complete Defense Scenarios

For Defense Scenarios, players will instead use their units to defend their home base against waves of enemies from different directions.

Defeated enemies will sometimes drop Support Beacons which can be used to summon additional units to help you!

Defense Scenarios Event Guide

Suppression Rules and Combat Units

All Unit Types and Suppression Rules

Unit Types	Characteristics
Single-Target	Strong against AoE Weak against Team
Team	Strong against Single-Target Weak against AoE
AoE	Strong against Team Weak against Single-Target
Melee	Strong against Ranged Weak against Flying
Ranged	Strong against Flying Weak against Melee
Flying	Strong against Melee Weak against Ranged
Unit Status	Characteristics
Siege	Only attacks Stronghold mechanisms and will not attack other enemy combat units.
Cannot Target Flying	Cannot hit Flying Units and are weak against them.
Deploy Freely	Can be deployed anywhere on the field, including outside your base territory.

List of Leadership Skills

All Combat Units

List of All Combat Units
Pyro Slime	Electro Slime	Hilichurl Fighter
Cryo Hilichurl Shooter	Electro Cicin	Hydro Cicin
Treasure Hoarders - Pyro Potioneer	Eremite - Sunfrost	Kairagi: Dancing Thunder
Kairagi: Fiery Might	Hydro Samachurl	Electro Hilichurl Shooter
Nobushi: Kikouban	Cryo Specter	Pyro Specter
Blazing Axe Mitachurl	Geovishap Hatchling	Hydro Mimic Finch
Ruin Guard	Bubbler Seahorse	Suppression Specialist Mek
Nimble Harvester Mek	Eremite - Desert Clearwater	Floating Anemo Fungus

All Frontline Buildings

List of All Frontline Buildings
Stronghold Mechanism - Pyro	Stronghold Mechanism - Cryo	Stronghold Mechanism - Hydro
Stronghold Mechanism - Electro	Home Base	Support Beacon
Anti-Personnel Mine	Shackling Mine

How to Unlock Mutual Security Enhancing Simulation

Complete Archon Quest Prologue Act 3

To play the Mutual Security Enhancing Simulation event, you must be at least Adventure Rank 20, and complete the Archon Quest Prologue Act 3 - Song of the Dragon and Freedom.

Prologue: Act 3 Archon Quest Guide

Archon Quest Chapter 4 Act 5 Optional

It's recommended to complete Archon Quest Chapter 4 Act 5, Masquerade of the Guilty, to get the best experience from the event, but it is not required to unlock the event.

Chapter 4 Act 5 Archon Quest Guide

Mutual Security Enhancing Simulation Event Information

Millelith Security Simulation Event Details

Event Start	June 7, 2024
Event End	June 17, 2024
How to Unlock	Reach Adventure Rank 20+ Complete Archon Quest Prologue - Act 3 Optional: Complete Archon Quest Chapter 4 Act 5
Event Rewards	+ 4-Star Bow Cloudforged and Refinement

What is the Mutual Security Enhancing Simulation event?

The Mutual Security Enhancing Simulation event is a combat and defense event, where players get to use Combat Units against enemies and Mechanici to increase their Analysis Progress and gain rewards!

Other Current & Upcoming Events

Mutual Security Enhancing Simulation Event Rewards

Free 4-Star Bow Cloudforged and Refinement Materials

Reach 300 Analysis Progress to get the 4-Star bow weapon, Cloudforged, in Mutual Security Enhancing Simulation! You can also get its refinement material, Cam and Cables of Law, through this event.

Cloudforged Weapon Guide

Analysis Progress Rewards

Analysis Progress	Rewards
x300	Cloudforged
x600	Primogem x60 Cam and Cables of Law x1 Mora 60,000
x900	Primogem x60 Cam and Cables of Law x1 Mora 60,000
x1,200	Primogem x60 Cam and Cables of Law x1 Mora 60,000
x1,500	Primogem x60 Cam and Cables of Law x1 Mora 60,000
x1,800	Primogem x60 Crown of Insight x1 Mora 60,000

Event Stage Rewards

Assault Stages	Rewards
Power Algorithm	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x5 Guide to Prosperity x5 Lustrous Stone from Guyun x5 Mystic Enhancement Ore x10
Outflank and Encircle	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x5 Guide to Diligence x5 Mist Veiled Mercury Elixir x5 Mystic Enhancement Ore x10
Saturation Fire Theory	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x5 Guide to Gold x5 Piece of Aerosiderite x5 Mystic Enhancement Ore x10
Contested River Crossings	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x5 Guide to Transience x5 Jeweled Branch of a Distant Sea x5 Mystic Enhancement Ore x10
Maneuver, Maneuver, and More Maneuver	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x5 Guide to Elegance x5 Narukami's Joy x5 Mystic Enhancement Ore x10
Tactical Reserves	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x5 Guide to Light x5 Mask of the Tiger's Bite x5 Mystic Enhancement Ore x10
Crushing Pincer Maneuver	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x10 Sanctifying Unction x5 Mystic Enhancement Ore x10
Defense Stages	Rewards
Build an AA Umbrella	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x5 Guide to Admonition x5 Iron Talisman of the Forest Dew x5 Agnidus Agate Fragment x2
Overwhelming Air Superiority	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x5 Guide to Ingenuity x5 Oasis Garden's Kindness x5 Varunada Lazurite Fragment x2
Force Concentration	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x5 Guide to Praxis x5 Remnant Glow of Scorching Might x5 Vayuda Turquoise Fragment x2
Flexible Defensive Countermeasures	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x5 Guide to Equity x5 Chapter of an Ancient Chord x5 Shivada Jade Fragment x2
Stronghold Firepower Response	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x5 Guide to Justice x5 Sublimation of Pure Sacred Dewdrop x5 Prithiva Topaz Fragment x2
Effective AoE and Delaying Actions	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x5 Guide to Order x5 Wine Goblet of the Pristine Sea x5 Vajrada Amethyst Fragment x2
Minefield-Supported Combined Arms Operation	Primogem x50 Analysis Progress x180 Mora x50,000 Hero's Wit x10 Sanctifying Unction x5 Nagadus Emerald Fragment x2

Total Security Enhancing Simulation Rewards

All Security Simulation Event Rewards
Primogem x1,000	Crown of Insight x1	Mora x1,000,000
Hero's Wit x80	Cam and Cables of Law x4	Cloudforged x1
Mystic Enhancement Ore x70	Guide to Prosperity x5	Guide to Diligence x5
Guide to Gold x5	Guide to Transience x5	Guide to Elegance x5
Guide to Light x5	Guide to Admonition x5	Guide to Ingenuity x5
Guide to Praxis x5	Guide to Equity x5	Guide to Justice x5
Guide to Order x5	Lustrous Stone from Guyun x5	Mist Veiled Mercury Elixir x5
Piece of Aerosiderite x5	Jeweled Branch of a Distant Sea x5	Narukami's Joy x5
Mask of the Tiger's Bite x5	Iron Talisman of the Forest Dew x5	Oasis Garden's Kindness x5
Remnant Glow of Scorching Might x5	Chapter of an Ancient Chord x5	Sublimation of Pure Sacred Dewdrop x5
Wine Goblet of the Pristine Sea x5	Sanctifying Unction x10	Nagadus Emerald Fragment x2
Agnidus Agate Fragment x2	Varunada Lazurite Fragment x2	Vajrada Amethyst Fragment x2
Shivada Jade Fragment x2	Vayuda Turquoise Fragment x2	Prithiva Topaz Fragment x2

Battle Pass Achievements

Completing certain parts of the event will give you Battle Pass achievements, and let you raise your BP level!

Battle Pass Guide

Genshin Impact Related Guides

List of Events

Current Events

Event Guide	Date and Rewards
Quirky Quaking Arena	04/21/2025 - 05/02/2025
Song of the Welkin Moon	03/10/2025 - 05/10/2025

Upcoming Events

Event Guide	Date and Rewards
Rhythm Ball Meztli	04/28/2025 - 05/06/2025

Permanent/Recurring Events

Event Name	Event Period / Rewards
Daily Check-In	2021/03/01 - Permanently Available
Hangout Events	Permanently Available after Version 1.4 + Talent Materials + Specialty Dishes
Test Run Event	Permanently Available + Ascension Materials
Baptism of Song	Permanently Available + Free Barbara
Stellar Reunion Returnee Event	Permanently Available + Prototype Rancour

Past Events

List of Past Events