Ruan Mei is an Ice and Harmony character in Honkai: Star Rail. Check out this guide for Ruan Mei's best builds, team comps, relics, light cones, and kit here!

Ruan Mei Character Guides
Build Guide	Materials	Warp Banner

Ruan Mei's Character Overview

Ruan Mei Basic Info and Rating

Ruan Mei Basic Information
Ruan Mei	Rarity	5-star
	Element	Ice
	Path	Harmony
General Rating		Endgame Rating
Overall Support		MoC PF AS

Ratings are based on E0.

How do you rate Ruan Mei?

Character Tier List

Ruan Mei Stats

Is Ruan Mei Worth It?

Ruan Mei is a top-tier support who can buff the entire party's DMG, SPD, and Break Efficiency. Ruan Mei can also delay an enemy's recovery after Weakness Break and deal a decent amount of bonus DMG.

Ruan Mei is the best-in-slot teammate in a lot of team comps and is a must get for the utility she provides.

Ruan Mei's Best Builds

Break DMG Support Build

Ruan Mei's best build includes Watchmaker since she is a Break Effect buffer. Sprightly Vonwacq is the best ornament for most team comps since it allows Ruan Mei to be first in the turn order to apply buffs.

Despite Ruan Mei's kit scaling on Break Effect, using an Energy Regeneration Rope is more optimal as it enables her to charge her Ultimate faster. You can get Break Effect stats through sub-stats, traces, and relic sets.

Recommended Stat Values

Stat	Recommended Value
Break Effect	160% (Outside of combat)
SPD	134 or above
HP%	3800 or above
DEF%	1000 or above

Ruan Mei needs a total of 180% Break Effect to max out the effect of her buffs. You can get just 160% Break Effect through Relic sub-stats and effects since the other 20% will come from her Bonus Ability.

Aside from having enough SPD, giving Ruan Mei enough HP and DEF stats will help her tank a lot of damage in endgame content.

Ruan Mei's Best Team Comps

Ruan Mei F2P Team (Free to Play)

Support	DPS	Support	Healer
Ruan Mei	March 7th (Imaginary)	Trailblazer (Imaginary)	Gallagher

This free-to-play team involves Ruan Mei increasing everyone's DMG and Break Efficiency. March 7th will benefit from Ruan Mei's All-Type RES PEN and Break Effect buffs while the Trailblazer can provide Super Break DMG.

Ruan Mei Break Effect Team

Support	DPS	Support	Healer
Ruan Mei	Firefly	Trailblazer (Imaginary)	Lingsha

Ruan Mei can benefit any unit who scales on the Break Effect stat. Characters like Firefly and the Imaginary Trailblazer can benefit from Ruan Mei's Break Effect buffs.

Ruan Mei can also delay an enemy's recovery from Weakness Break, which gives more chances to deal Super Break DMG to an enemy.

Ruan Mei DoT Team

Support	DPS	Sub-DPS	Healer
Ruan Mei	Kafka	Black Swan	Huohuo

Ruan Mei is an outstanding Support for DoT teams as she can delay the enemies' recovery from Break, which lets the enemy take more DoTs before recovering to attack.

Ruan Mei can also increase DoTs inflicted through Weakness Break and her Break Efficiency buff can help trigger more DoTs at a faster rate.

Ruan Mei Generalist Team

Support	DPS	Support	Healer
Ruan Mei	Jingliu	Bronya	Huohuo

Ruan Mei is excellent when paired with DPS characters whose attacks can dish out a huge amount of Toughness DMG. You can either slot in another Support for a stronger offense or a Preservation character to keep your party alive!

Ruan Mei Dual DPS Team

Support	DPS 1	DPS 2	Healer
Ruan Mei	Jingliu	Blade	Luocha

The team shown is just an example of possible Dual DPS team comps.

Ruan Mei can enable teams with two DPS characters as her buffs can affect the entire party. This is especially great against Elite enemies with the same Type of Weaknesses as the DPS characters' elements.

Ruan Mei Ice-Quantum Team

Support	DPS	Support	Utility
Ruan Mei	Jingliu	Silver Wolf	Fu Xuan

This Ruan Mei team comp is viable in certain content where the enemy is weak to Quantum but not to Ice. Silver Wolf is a must-have for this team so she can implant an Ice Weakness on an enemy.

Ruan Mei can also equip the Planetary Rendezvous light cone to increase the DMG of the Ice DPS!

Ruan Mei's Best Relics and Ornaments

All Recommended Relics and Ornaments

Relics	Rating & Merits
Watchmaker, Master of Dream Machinations x4	★★★★★ - Best Watchmaker, Master of Dream Machinations is the best set for Ruan Mei as it provides her a lot of Break Effect for her and other units. This easily allows Ruan Mei to reach the 180 Break Effect threshold by herself.
Thief of Shooting Meteor x4	★★★★☆ - 2nd Best Thief of Shooting Meteor is great for Ruan Mei as it provides her with a substantial amount of Break Effect and bonus energy for every time she inflicts Break on an enemy.
Messenger Traversing Hackerspace x4	★★★☆☆ - 3rd Best Messenger Traversing Hackerspace is the next best thing especially if Ruan Mei already has 180% Break Effect through Light Cones and Relic sub-stats.
Ornaments	Merits
Sprightly Vonwacq	★★★★★ - Best Sprightly Vonwacq is generally the best set since it provides Ruan Mei some Energy Regen, which is needed so that she can have full-uptime with her Ultimate. This also increases her chances of being the first unit to move and apply buffs to the party.
Broken Keel	★★★★☆ - 2nd Best Broken Keel is great if Ruan Mei already has a high amount of SPD and she is used on CRIT-centric teams. Ruan Mei must have at least 30% Effect RES for its effect to be active.
Lushaka, the Sunken Seas	★★★★☆ - 3rd Best If Ruan Mei has a lot of SPD, she can use Lushaka to increase the ATK of the first character in the team lineup.
Penacony, Land of the Dreams	★★★☆☆ - 4th Best Penacony, Land of the Dreams is great on Ruan Mei as it provides Energy Regen. This is best used when paired with Ice DPS units thanks to its DMG buff.
Talia: Kingdom of Banditry	★★★☆☆ - 5th Best Talia: Kingdom of Banditry is great if you need more Break Effect stats for Ruan Mei. The SPD threshold can easily be attained through Relic sub-stats and Traces.

Relic List & Guide

Ruan Mei's Best Light Cones

All Recommended Light Cones

Light Cone	Why We Recommend It
Past Self in Mirror	★★★★★ - Best Past Self in Mirror is the best for Ruan Mei since it increases her Break Effect immensely and provides a party-wide DMG buff when she uses her Ultimate. It also provides Energy Regen at the start of each wave and SP restoration.
Memories of the Past	★★★★☆ - Great Memories of the Past is a great Light Cone for Ruan Mei since it increases her Break Effect and recovers her Energy whenever she attacks.
Meshing Cogs	★★★★☆ - Great Meshing Cogs is a good Light Cone for Ruan Mei since it recovers her Energy whenever she attacks or gets hit, which helps her get her Ultimate back up sooner.
Carve the Moon, Weave the Clouds	★★★☆☆ - Good Carve the Moon, Weave the Clouds is a good Light Cone for Ruan Mei since it provides either an ATK, CRIT DMG, or Energy Regen buff for all allies. These are all useful buffs for either increasing the party's damage or Energy Regen, on top of the various buffs she already provides.
But the Battle Isn't Over	★★★☆☆ - Good But the Battle Isn't Over is also a good option for Ruan Mei since it provides Energy Regen and boosts the DMG of the ally who takes action after she uses her Skill. However, this option needs some SPD tuning since you need to make sure the DPS takes action after her.
Dance! Dance! Dance!	★★★☆☆ - Good Dance! Dance! Dance! is a good 4-Star Light Cone for Ruan Mei that Advances Forward all allies' when she uses her Ultimate. This can be useful for providing allies extra turns.

Light Cone List & Guide

Ruan Mei's Gameplay Guide

Back to Ruan Mei Builds ▲

Ruan Mei's Trace Priority

Trace	Priority & Explanation
Basic Attack	★☆☆☆☆ - Lowest Priority Ruan Mei's Basic ATKs can be left out as most of her DMG will come from Weakness Breaks.
Skill	★★★★★ - Highest Priority Upgrading Ruan Mei's Skill will increase the DMG buff applied to the entire party.
Ultimate	★★★★★ - Highest Priority Upgrading Ruan Mei's Ultimate improves All-Type RES PEN and Thanatoplum Rebloom DMG.
Talent	★★★★☆ - High Priority Upgrading Ruan Mei's Talent increases the SPD buff and Ruan Mei's Ice Break DMG from breaking enemy Weaknesses.

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Ruan Mei's Recommended Eidolons

	Why We Recommend It
E1	★★★★★ - Amazing Great stopping point for low-spenders. When Ruan Mei's Ultimate is up, all allies' attacks will ignore 20% of the enemy's DEF.
E2	★★★★☆ - Great Also a great Eidolon to have. Allies get a permanent ATK bonus when attacking Weakness Broken enemies.
E4	★★★★☆ - Great Ruan Mei's Break Effect gets a significant increase when an enemy has their Weakness Broken. This allows you to build Ruan Mei with other stats aside from Break Effect.
E6	★★★★☆ - Great Ruan Mei's Ultimate duration is extended by one turn, which allows her to have a more comfortable uptime with the All-Type RES PEN buffs.

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Skill increases Break Efficiency

Ruan Mei's Skill allows her to increase the entire party's Break Efficiency (amount of toughness DMG taken by an enemy) and DMG for three turns.

Ultimate Increases All-RES PEN

Ruan Mei's Ultimate will summon a field that increases All-RES PEN for all allies for two turns. After an ally breaks an enemy's Weakness, Thanatoplum Rebloom will be implanted into that enemy.

Delay Recovery from Break

Thanatoplum Rebloom is triggered when enemies try to recover from Weakness Break, this prevents them from recovering from Weakness Break and delays their actions. Enemies will also deal additional Ice Break DMG when they try to recover from Weakness Break.

Talent Increases SPD

When Ruan Mei is on the field, her talent will provide a permanent SPD buff to all party members. Additionally, when other allies inflict Weakness Break on an enemy, Ruan Mei will deal additional Ice Break DMG.

Technique Triggers Skill

Using Ruan Mei's Technique, she gains Silken Serenade and will automatically trigger the Skill's effect at the beginning of combat.

Ignore Enemy Weaknesses in Simulated Universe

When Ruan Mei activates her Technique in the Simulated Universe, allies attacking target foes will deplete their toughness regardless if said enemy is weak to the element used or not.

For each Blessing in possession, the Toughness DMG will increase and bonus Ice DMG will be dealt.

Ruan Mei's Traces (Skills and Kit)

See Trace Priority ▲

All Abilities and Effects

Trace	Scaling and Explanation
Skill	String Sings Slow Swirls: After using her Skill, Ruan Mei gains Overtone, lasting for 3 turn(s). This duration decreases by 1 at the start of Ruan Mei's turn. When Ruan Mei has Overtone, all allies' DMG increases by 16% and Weakness Break Efficiency increases by 50%.
Talent	Somatotypical Helix: Increases SPD by 8% for the team (excluding this character). When allies Break an enemy target's Weakness, Ruan Mei deals to this enemy target Break DMG equal to 60% of her Ice Break DMG.
Ultimate	Petals to Stream, Repose in Dream: Ruan Mei deploys a field that lasts for 2 turns. The field's duration decreases by 1 at the start of her turn. While inside the field, all allies' All-Type RES PEN increases by 15% and their attacks apply Thanatoplum Rebloom to the enemies hit. When these enemies attempt to recover from Weakness Break, Thanatoplum Rebloom is triggered, extending the duration of their Weakness Break, delaying their action by an amount equal to 20% of Ruan Mei's Break Effect plus 10%, and dealing Break DMG equal to 30% of Ruan Mei's Ice Break DMG. Enemy targets cannot have Thanatoplum Rebloom re-applied to them until they recover from Weakness Break.
Technique	Silken Serenade: After using the Technique, gains Silken Serenade. At the start of the next battle, automatically triggers the Skill for 1 time(s) without consuming Skill Points. In Simulated Universe, when Ruan Mei has Silken Serenade, the team actively attacking enemies will always be regarded as attacking their Weakness to enter battle, and this attack can reduce all enemies' Toughness regardless of Weakness types. When breaking Weakness, triggers Weakness Break Effect corresponding to the attacker's Type. For every Blessing in possession (up to a maximum of 20 Blessings), additionally increases the Toughness-Reducing DMG of this attack by 100%. After breaking an enemy target's Weakness, additionally deals to the enemy target Break DMG equal to 100% of Ruan Mei's Ice Break DMG. Stat Bonus: 1. Break Effect + 5.3% 2. SPD +2 3. Break Effect + 8.0%
Basic ATK	Threading Fragrance: Deals Ice DMG equal to 50% of Ruan Mei's ATK to a single target enemy.
Bonus Ability	Inert Respiration: Increases Break Effect by 20% for all allies. Stat Bonus: 1. DEF +5.0% 2. Break Effect + 5.3%
Bonus Ability	Days Wane, Thoughts Wax: Ruan Mei regenerates 5 Energy at the start of her turn. Stat Bonus: 1. Break Effect + 8.0% 2. DEF +7.5%
Bonus Ability	Candle Lights on Still Waters: In battle, for every 10% of Ruan Mei's Break Effect that exceeds 120%, her Skill additionally increases allies' DMG by 6%, up to a maximum of 36%. Stat Bonus: 1. SPD +3 2. DEF +10.0%

Ruan Mei's Eidolons

See Recommended Eidolons ▲

All Eidolon Resonance Effects

E1	Neuronic Embroidery While the Ultimate's field is deployed, the DMG dealt by all allies ignores 20% of the target's DEF.
E2	Reedside Promenade With Ruan Mei on the field, all allies increase their ATK by 40% when dealing DMG to enemies with Weakness Break.
E3	Viridescent Pirouette Ultimate Lv. +2, up to a maximum of Lv. 15. Talent Lv. +2, up to a maximum of Lv. 15.
E4	Chatoyant Éclat When an enemy target's Weakness is Broken, Ruan Mei's Break Effect increases by 100% for 3 turn(s).
E5	Languid Barrette Skill Lv. +2, up to a maximum of Lv. 15. Basic ATK Lv. +1, up to a maximum of Lv. 10.
E6	Sash Cascade Extends the duration of the Ultimate's field by 1 turn(s). The Talent's Break DMG multiplier additionally increases by 200%.

Ruan Mei Ascension and Trace Materials

Total Ascension Materials

Ascension Materials	Total
Immortal Scionette	15
Immortal Aeroblossom	15
Immortal Lumintwig	15
Gelid Chitin	65
Credit	308,000

Total Trace Materials

All Trace Node Materials	Total
Harmonic Tune	15
Immortal Scionette	41
Ancestral Hymn	72
Immortal Aeroblossom	56
Stellaris Symphony	139
Immortal Lumintwig	58
Past Evils of the Borehole Planet Disaster	12
Tracks of Destiny	11
Credit	3,000,000

Additional Ruan Mei Information

How to Get Ruan Mei

Limited Banners
Floral Triptych

Ruan Mei was previously available in the Character Warp banner called Floral Triptych, which ran from June 18, 2024 to July 10, 2024.

Ruan Mei Banner Schedule and Rates

Background and Voice Actors

Voice Actor	EN: Emi Lo JP: Saori Ōnishi
Faction / Affiliation	Genius Society

Ruan Mei's In-Game Lore

Faction	Herta Space Station
Background	A member of the Genius Society and an expert in life sciences. She teamed up with Herta and the others to develop the Simulated Universe.

Honkai: Star Rail Related Guides

▶︎ All Playable Characters

Characters by Rarity

Character Rarity
★★★★	★★★★★

Characters by Path

Character Paths
Destruction	The Hunt	Erudition	Harmony
Nihility	Preservation	Abundance	Remembrance

Characters by Element

Character Elements
Fire	Ice	Lightning	Wind
Quantum	Imaginary	Physical

All Ice Characters

Ice Characters
Gepard	Herta	March 7th	Pela
Yanqing	Jingliu	Ruan Mei	Misha
The Herta	Trailblazer (Ice)