Ruan Mei Skills, Traces & Eidolons

Honkai: Star Rail
Last Updated: on Jun 20, 2025 at 10:00
Build GuideSOON Character Profile

Introductions

Ruan Mei is a 5★ character with the Ice element who follows the Path of Harmony.
A member of the Genius Society and an expert in life sciences. She teamed up with Herta and others to develop the Simulated Universe.

Skills

Basic ATK
Threading Fragrance
Single Target
Lv. 6
Energy gain: 20
Break: Main: 10.0
Deals Ice DMG equal to 100% of Ruan Mei's ATK to a single target enemy.
Skill
String Sings Slow Swirls
Support
Lv. 10
Energy gain: 30
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 32.0% and Weakness Break Efficiency increases by 50.0%.
Ultimate
Petals to Stream, Repose in Dream
Support | 130 energy cost
Lv. 10
Energy gain: 5
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 25.0% 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 20.0% of Ruan Mei's Break Effect plus 10.0%, and dealing Break DMG equal to 50.0% of Ruan Mei's Ice Break DMG.
Enemy targets cannot have Thanatoplum Rebloom re-applied to them until they recover from Weakness Break.
Talent
Somatotypical Helix
Support
Lv. 10
Energy gain: -
Increases SPD by 10.0% 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 120.0% of her Ice Break DMG.
Technique
Silken Serenade
Enhance
Energy gain: -
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 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 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

Inert Respiration
A2
Major trace
Increases Break Effect by 20.0% for all allies.
Days Wane, Thoughts Wax
A4
Major trace
Ruan Mei regenerates 5 Energy at the start of her turn.
Candle Lights on Still Waters
A6
Major trace
In battle, for every 10.0% of Ruan Mei's Break Effect that exceeds 120.0%, her Skill additionally increases allies' DMG by 6.0%, up to a maximum of 36.0%.

Minor Traces

Break Effect
+37.3%
DEF
+22.5%
SPD
+5

Eidolons

E1
Neuronic Embroidery
Eidolon 1
While the Ultimate's Zone is deployed, the DMG dealt by all allies ignores 20.0% of the target's DEF.
E2
Reedside Promenade
Eidolon 2
While Ruan Mei is on the field, all allies increase their ATK by 40.0% when dealing DMG to enemies that are Weakness Broken.
E3
Viridescent Pirouette
Eidolon 3
Ultimate Lv. +2, up to a maximum of Lv. 15.
Talent Lv. +2, up to a maximum of Lv. 15.
E4
Chatoyant Éclat
Eidolon 4
When an enemy target's Weakness is Broken, Ruan Mei's Break Effect increases by 100% for 3 turn(s).
E5
Languid Barrette
Eidolon 5
Skill Lv. +2, up to a maximum of Lv. 15.
Basic ATK Lv. +1, up to a maximum of Lv. 10.
E6
Sash Cascade
Eidolon 6
Extends the duration of the Ultimate's Zone by 1 turn(s). The Talent's Break DMG multiplier additionally increases by 200%.

Stats and Ascension Materials

Lv. 1
Base Stats
HP
148
ATK
90
DEF
66
SPD
104
Ascension Materials
Credits
308000
Immortal Scionette
15
Immortal Aeroblossom
15
Gelid Chitin
65
Immortal Lumintwig
15

Ruan Mei Voice Actors

EN
Emi Lo
JP
Onishi Saori
CN
Zhang Wenyu
KR
Yoon Yeo-jin
Shikhu
Staff Author
Follow Shikhu

This guide has been written by Shikhu (Discord - Shikhu). A long-time Honkai Star Rail player since launch experiencing everything the game has to offer from building his favourite characters to clearing MoC, PF and AS on the regular.

1.

Changelog

  • 20 Jun. 2025: Page and Skills for Raun Mei added.
Show more
Show less