Ruan Mei
★★★★★

Ruan Mei Build

Ruan Mei is a 5★ Ice character on the Path of Harmony in Honkai: Star Rail. Below are the character's stats, skills and Eidolons — plus a pity calculator if you plan to pull.

Released: 27/12/2023 · v1.5· Updated: 03/07/2026
Updated for version 4.3 · 02/07/2026
Calculate pity to pull this character →
Community usage · phase 4.3.2
Memory of Chaos10.6%
Pure Fiction14.1%
Apocalyptic Shadow17.5%
Stats from 16,423 real player profiles (Memory of Chaos) · community data by LvlUrArti
Building Ruan Mei — just follow the numbers
30-second summary

Ruan Mei is one of the best universal supports in the game, buffing team-wide DMG, SPD, RES PEN and Break efficiency. Almost everyone should pull her — skip only if you already have plenty of Harmony supports or don't push endgame.

1
30-second build
In a hurry? This box is all you need — details below
BodyHP% (or DEF%) FeetSPD SphereHP% (or DEF%) RopeEnergy Regeneration Rate

Sub-stat priority: Break Effect > SPD > HP% = DEF% = Effect RES

2
Verdict & playstyle
How strong, worth pulling, how to play
Memory of Chaos 4/5
Pure Fiction 4/5
Apocalyptic Shadow 5/5
Should you pull Ruan Mei?

Ruan Mei is one of the best universal supports in the game, buffing team-wide DMG, SPD, RES PEN and Break efficiency. Almost everyone should pull her — skip only if you already have plenty of Harmony supports or don't push endgame.

Pros
  • Team-wide DMG, RES PEN, SPD and Break efficiency buffs
  • Slots into nearly every comp
  • Elite in all three endgame modes
  • Complete at E0, not eidolon-reliant
Cons
  • Weaker in teams that don't hit weakness
  • Deals almost no personal damage
  • Needs enough SPD and Break Effect to shine
How to play

On a 3-turn cadence: open with Ultimate to drop the field (RES PEN + Break buff), then cast Skill to enable the 3-turn DMG buff, and Basic Attack on remaining turns to regen energy. Keep Skill active before your DPS acts.

3
Full build
Light cones, relics, stat targets — with reasons
Best Relics
BodyHP% (or DEF%)
FeetSPD
SphereHP% (or DEF%)
RopeEnergy Regeneration Rate

Sub-stat priority: Break Effect > SPD > HP% = DEF% = Effect RES

Stat targets

Targets: 160% Break Effect from relics (180% total with her trace), SPD at least 134 (ideally 160+ without Vonwacq), Energy Regen rope, ~4000+ HP to survive. No CRIT or ATK needed.

4
Teams
Best teammates to pair with
Best teams for Ruan Mei

The Firefly/Break team (Firefly + Fugue + Lingsha) is her strongest stage. Kafka + Black Swan DoT also loves her DMG and speed buffs. A Boothill single-target break team leverages her Break and RES PEN buffs.

Meta suggestions synthesized from global community consensus (Meta 2026-07). Figures come from game data — updated each patch.

5
Eidolons
How far to invest, which milestones matter

E0 (E1 rất mạnh cho đội Phá Vỡ) — E0 is already excellent and complete. E1 (20% DEF ignore) is the most valuable upgrade for Break teams; E2 adds team-wide ATK. No need to go higher.

E1
Neuronic Embroidery★★★★★
While the Ultimate's Zone is deployed, the DMG dealt by all allies ignores 20% of the target's DEF.
All allies ignore 20% of enemy DEF while the Ultimate's Zone is active, a major team-wide damage boost.
E2
Reedside Promenade★★★★☆
While Ruan Mei is on the field, all allies increase their ATK by 40% when dealing DMG to enemies that are Weakness Broken.
While Ruan Mei is on the field, all allies gain 40% ATK against Weakness Broken enemies, a strong but conditional buff.
E3
Viridescent Pirouette★★☆☆☆
Ultimate Lv. +2, up to a maximum of Lv. 15. Talent Lv. +2, up to a maximum of Lv. 15.
Only levels up the Ultimate and Talent without adding new effects, making it low-value utility.
E4
Chatoyant Éclat★★★★☆
When an enemy target's Weakness is Broken, Ruan Mei's Break Effect increases by 100% for 3 turn(s).
When an enemy is Weakness Broken, Ruan Mei's Break Effect increases by 100% for 3 turns, greatly boosting her Break DMG output.
E5
Languid Barrette★★☆☆☆
Skill Lv. +2, up to a maximum of Lv. 15. Basic ATK Lv. +1, up to a maximum of Lv. 10.
Only levels up the Skill and Basic ATK without adding new effects, making it low-value utility.
E6
Sash Cascade★★★★★
Extends the duration of the Ultimate's Zone by 1 turn(s). The Talent's Break DMG multiplier additionally increases by 200%.
Extends the Ultimate's Zone by 1 turn and adds a further 200% Break DMG multiplier to the Talent, a major overall power spike.
6
Skills & Traces
What to level first — tap each skill for details
Skill Leveling Priority
Skill ★★★★★ Her Skill grants Overtone, buffing the whole team's DMG by 40% and Break Efficiency by 50%, making it her core buff source to max first.
Ultimate ★★★★★ Her Ultimate deploys a Zone granting 30% RES PEN to the whole team plus Thanatoplum Rebloom, another key team-wide DMG source worth maxing.
Talent ★★★☆☆ Her Talent gives team SPD and personal Break DMG, useful but the SPD portion is fixed regardless of level, so it ranks below Skill and Ultimate.
Basic ATK ★☆☆☆☆ As a support, her Basic ATK is only a filler for energy when Skill Points run low, so it stays the lowest priority.
Trace priority: A2 = A6 > A4 Eidolon priority: E1 = E2 > E4 > E3 = E5
Skills
Threading Fragrance
Threading Fragrance
Basic ATK Single Target Lv.10

Deals Ice DMG equal to 140% of Ruan Mei's ATK to one designated enemy target.

String Sings Slow Swirls
String Sings Slow Swirls
Skill Support Lv.15

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 every turn. When Ruan Mei has Overtone, all allies' DMG increases by 40% and Weakness Break Efficiency increases by 50%.

Petals to Stream, Repose in Dream
Petals to Stream, Repose in Dream
Ultimate Support Lv.15

Ruan Mei deploys a Zone that lasts for 2 turns. The Zone's duration decreases by 1 at the start of her turn. While inside the Zone, all allies' All-Type RES PEN increases by 30% 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 60% of Ruan Mei's Ice Break DMG. Enemy targets cannot have Thanatoplum Rebloom re-applied to them until they recover from Weakness Break.

Somatotypical Helix
Somatotypical Helix
Talent Support Lv.15

Increases SPD by 11% for all teammates (i.e., excluding this unit). When allies Break an enemy target's Weakness, Ruan Mei deals to this enemy target Break DMG equal to 150% of her Ice Break DMG.

Attack
Attack

Attacks an enemy, and after entering combat, reduces their Toughness of the corresponding Type.

Silken Serenade
Silken Serenade
Technique Enhance

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 or Divergent Universe, when Ruan Mei has Silken Serenade, the team actively attacking enemies will always be regarded as attacking their Weakness to enter combat, 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 max of 20 Blessings will be taken into account), additionally increases the Toughness Reduction 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.

Major Traces
3 powerful passives (A2/A4/A6) — unlocked via Ascension
A2
Inert Respiration

Increases Break Effect by 20% for all allies.

A4
Days Wane, Thoughts Wax

Ruan Mei regenerates 5 Energy at the start of her turn.

A6
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%.

Trace Bonuses
Total stats gained from unlocking the full trace tree
+37.3%Break Effect
+22.5%DEF
+5SPD
7
Stats & Materials
Base stats at Lv.80 and what to farm
Level 80 stats
HP
1,087
ATK
660
DEF
485
SPD
104
CRIT Rate
5%
CRIT DMG
50%
Ascension Materials
Total materials to max ascension — tap to see how to farm.
Material Planner →
8
Ruan Mei FAQ
What is the best Light Cone for Ruan Mei?

The best Light Cone for Ruan Mei is Past Self in Mirror (top pick). See F2P options in the Light Cones section above.

Is Ruan Mei worth pulling?

Ruan Mei is one of the best universal supports in the game, buffing team-wide DMG, SPD, RES PEN and Break efficiency. Almost everyone should pull her — skip only if you already have plenty of Harmony supports or don't push endgame.

What is the best team for Ruan Mei?

The Firefly/Break team (Firefly + Fugue + Lingsha) is her strongest stage. Kafka + Black Swan DoT also loves her DMG and speed buffs. A Boothill single-target break team leverages her Break and RES PEN buffs.

Matching Light Cones
Path of Harmony — a Light Cone only gives its bonus to matching-Path characters.
Light Cones →
How to read this build page

Every character build page has these parts: recommended Light Cone/Relic sets and stat table, a Trace/skill leveling order, Eidolon milestones worth considering, and a reference SPD threshold. Read them in that order — gear tells you "what to use", Traces tell you "what to level first", Eidolon tells you "is it worth pulling dupes", SPD tells you "how fast you need to be to keep the rotation on time". The section below explains how to read each part and applies the same way to every character on the site — check the exact numbers in the table above this section, since community sources sometimes differ by a few points.

Why the Light Cone and Relic picks make sense

Most characters have a "signature" Light Cone built for their exact role, plus a few cheaper substitutes from the standard banner or easy-to-get 3-4★ cones. Missing the signature isn't a dead end — most characters keep most of their power with a well-matched substitute, typically losing somewhere between a few percent and roughly a fifth of total damage depending on the setup, per most public comparisons.

  • Relic sets (2pc+2pc or 4pc) are picked for the set effect that fits that character's role (single-target DPS, AoE, shield/healing support, Break damage, and so on).
  • Main stats per slot (Body/Feet/Sphere/Rope) and substats follow a priority that changes by role: DPS roles usually chase CRIT Rate/CRIT DMG before ATK%; Break-focused roles prioritize Break Effect; support/healing roles often value Effect Hit/RES or Outgoing Healing over pure CRIT.

These weights differ per character and can shift slightly between ranking sources — follow the exact priority table above rather than applying one formula to every role.

Trace/skill leveling order by role (a general guideline, not a fixed rule)

There's no single order that's correct for every character, and community sources sometimes disagree depending on the team the character is used in — but the general pattern by role is:

  • DPS: level whichever skill (Skill or Ultimate) carries most of the damage for that character first, with Basic ATK usually last if it isn't the main damage source.
  • Support/Buffer: prioritize Traces that boost buff strength or the skill that applies the effect over Basic ATK, since this role's value comes from lifting the team rather than personal damage.
  • Healer/Shielder: prioritize the main healing or shield skill first, since that is the reason the team runs this character.
  • Break/CC: prioritize whichever skill contributes the most Toughness Damage, since the Break/Weakness Break window is where the team dumps damage.

Major Traces unlock at fixed ascension levels in-game, not by choice — but which one to level first (when resources are limited) should follow the role priority above. Since the exact order can differ between ranking sources, check the specific recommendation in the table above for this character.

Eidolons: how far E0 gets you, and which milestone is worth considering

General rule: most characters at E0 (no duplicates) already handle most content, even 5-star characters. Eidolons are a duplicate-fueled upgrade system — higher levels cost more resources for a smaller power gain, and the actual gain varies a lot per character (some barely change role at E0, others shift how they're played at a specific level). The milestones most often cited by the community tend to sit at E1, E2, or E6 depending on the character — but none of these are required to clear the game's content. Check the Eidolon section in the table above for this character's specific milestone and gain; if sources disagree on how to rate a milestone, trust the in-game effect description over a pre-set percentage number.

How to think about SPD breakpoints

SPD (Speed) controls how often a character acts in the turn order — higher SPD means denser actions, and for some roles (especially support/healing that need to buff or heal before the team gets hit) hitting the right SPD "breakpoint" matters more than the raw SPD number. Values like 101 or 134 SPD are often cited as community-common breakpoints (letting a character act again before or after a specific point in certain team setups) — this is crowd-verified action-gauge math, not an official fixed number the game states for every situation. The right breakpoint also depends on the team and allies' SPD, so treat the SPD suggestion in the table above as a starting point to adjust from, not a mandatory target.

Where to dig deeper

This section only teaches you how to read the page — for deeper comparisons, use the dedicated tools:

  • Tier list to see where this character stands against the full roster.
  • Teams for full in-game comps with rotation order.
  • Relic score to check how your current gear scores against the benchmark.
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