Ruan Mei Complete Harmony Guide
2026-02-10·13 min read·★ 9.5
Version: 2.7+ | Last Updated: 2026-02-10 | Sources: Game8, VG247, Lootbar
Overview
Ruan Mei is a 5-star Ice Harmony character who buffs the entire party's DMG, SPD, Break Efficiency, and delays enemy recovery after Weakness Break.
Why Ruan Mei is SS Tier Support
- Party-wide DMG buff (up to 68%)
- SPD buff to entire team
- Break Efficiency increase (50%+)
- Delays enemy recovery after Weakness Break
- Deals bonus break DMG when enemies recover
- Universal - works with any team
Advertisement
Key Mechanics
Skill: String Sings Slow Swirls
- Increases party SPD and DMG
- Lasts 3 turns
- SP-positive playstyle (Skill → Basic → Basic → Skill)
Ultimate: Petals to Stream, Repose in Dream
- All allies gain RES PEN
- Enemies have delayed Weakness Break recovery
- When enemies recover, Ruan Mei deals bonus break DMG
Talent: Somatotypical Helix
- Party gains Break Efficiency based on Ruan Mei's Break Effect
- Cap: 50% Break Efficiency at 180% Break Effect
Best Relic Sets
Main Build
| Slot | Set | Reason |
|---|---|---|
| 4pc | Watchmaker, Master of Dream Machinations | Break Effect + party buff |
| 2pc | Sprightly Vonwacq | Action advance at start |
Alternative Ornaments
- Penacony, Land of the Dreams (ER + team DMG)
- Broken Keel (Effect RES + team CRIT DMG)
Main Stats
| Piece | Main Stat | Notes |
|---|---|---|
| Body | HP% or DEF% | Survivability |
| Feet | SPD | Always |
| Sphere | HP% or DEF% | Survivability |
| Rope | Energy Regen | Always |
Substat Priority
- Break Effect ★★★ (until 180% total)
- SPD ★★★
- HP% ★★
- DEF% ★★
Target Stats
| Stat | Target |
|---|---|
| Break Effect | 180% (160% from substats + 20% from trace) |
| SPD | 134+ |
| HP | 3800+ |
| DEF | 1000+ |
Best Light Cones
| Rank | Light Cone | Notes |
|---|---|---|
| 1 | Past Self in Mirror (Sig) | Best overall, ER + break buff |
| 2 | In Pursuit of the Wind | Break Effect + action advance |
| 3 | Memories of the Past | Break Effect + ER |
| 4 | Meshing Cogs (4★) | F2P ER option |
| 5 | But the Battle Isn't Over | DMG buff |
Team Compositions
Super Break Team
- Ruan Mei + Trailblazer (Imaginary) + March 7th (Hunt) + Gallagher
- Maximizes Break damage
- Firefly also excellent
Kafka DoT Team
- Ruan Mei + Kafka + Black Swan + Huohuo
- Break delay + DoT synergy
Universal DPS Support
- Ruan Mei + Any DPS + Any Support + Sustain
- She works with everyone
Recommended DPS Partners
| Character | Synergy | Notes |
|---|---|---|
| Firefly | ★★★★★ | Perfect Break synergy |
| TB Imaginary | ★★★★★ | Super Break focused |
| Boothill | ★★★★★ | Break specialist |
| Kafka | ★★★★ | DoT + Break delay |
| Any DPS | ★★★★ | Universal buffs work everywhere |
Trace Priority
| Priority | Trace | Reason |
|---|---|---|
| 1 | Skill | Core buff ability |
| 2 | Talent | Break Efficiency sharing |
| 3 | Ultimate | RES PEN + Break delay |
| 4 | Basic | Lowest priority |
Gameplay Tips
- Break Effect Goal: 180% total (160% from gear + 20% from Bonus Ability)
- Skill Rotation: Skill → Basic → Basic → Skill (SP positive)
- Ultimate Timing: Before DPS breaks enemies
- Speed: Go first to apply buffs before DPS acts
- Universal: She has no bad teams
Eidolon Analysis
| E | Value | Effect |
|---|---|---|
| E0 | ★★★★★ | Already complete |
| E1 | ★★★★ | Ignores DEF on break |
| E2 | ★★★★ | More ATK buff |
| E6 | ★★★★★ | Even more Break synergy |
Ruan Mei vs Other Harmony
| Aspect | Ruan Mei | Sparkle | Robin |
|---|---|---|---|
| Buff Type | Team-wide | Single target | Team-wide |
| Strength | DMG + Break | CRIT DMG + Action | ATK + FUA |
| SP | Positive | Generates | Neutral |
| Best For | Universal/Break | Hypercarry | FUA teams |
References
👥Recommended Team Compositions
👥
RecommendedRuan Mei Break Team
Ruan Mei enhances Break Effect and Weakness Break damage.
🔥
Firefly
⚔️Main DPS
5Lv80 E0
❄️
Ruan Mei
✨Support
5Lv80 E0
🔥
Fugue
✨Support
5Lv80 E0
🔥
Gallagher
💚Healer
4Lv70 E6
Calculate resources needed to build this team
🧮Calculate Resources→