What are the best builds for Ruan Mei in Honkai: Star Rail? Ruan Mei is a Ice member of the Genius Society who subscribes to The Harmony Path Type. She's particularly good at keeping enemies in a weakened state and buffing the abilities of her teammates. On this page, as part of our Honkai: Star Rail guide, we're going to share the best builds for Ruan Mei.

What Are the Best Builds for Ruan Mei in Honkai: Star Rail?

Honkai: Star Rail: Ruan Mei - Best Builds 1
Image: Push Square

Ruan Mei is described as a sweet-tempered scholar, and the 81st member of the Genius Society. Subscribing to The Harmony Path Type, she's very good at increasing the strength of her allies and breaking the weaknesses of enemies. Below we'll detail everything you need to know about the character, including the best builds for Ruan Mei.

Should You Roll or Pull for Ruan Mei?

Ruan Mei is a weakness breaking machine. Her Ultimate can ensure enemies remain in an exposed state, while she's also able to increase the Break Effect and SPD of her allies, making her a deadly support unit on the battlefield.


Below is a full guide to Ruan Mei, including all of her abilities, including Skills, Talents, Techniques, Traces, and Eidolons.



  • Threading Fragrance: Basic Attack
    Deals Ice DMG equal to 50% of Ruan Mei 's ATK to a single enemy.
  • String Sings Slow Swirls: Skill
    After using her Skill, Ruan Mei gains "Overtone" that lasts for 2 turn(s). The duration of this state decreases by 1 at the start of Ruan Mei's each turn. When Ruan Mei has "Overtone," all allies' SPD increases by 16% and Weakness Break Efficiency increases by 50%.
  • Petals to Stream, Repose in Dream: Ultimate
    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 18% 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 + 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.


  • Somatotypical Helix
    Increases SPD 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 50% of her Ice Break DMG.


  • Silken Serenade
    Obtains “Silken Serenade” after using the Technique. At the start of the next battle, automatically triggers for 1 time(s) an effect equal to her Skill. Triggering this effect does not consume Skill Points.
    When Ruan Mei has “Silken Serenade,” actively attacking a target in Simulated Universe to enter battle will be regarded as attacking their Weakness to enter battle, and this attack can deplete Toughness regardless of Weakness types for all enemies. When inflicting Weakness Break in this way, triggers Break Effect corresponding to the Weakness Type of the attack. With every Blessing in possession, increases Toughness DMG of this attack by 100%. At the same time, increase Break DMG equal to 100% of Ruan Mei’s Ice Break DMG.


  • Inert Respiration
    Increases Break Effect for all allies by 20%
  • Days Wane, Thoughts Wax
    Ruan Mei regenerates 5 Energy at the start of her turn.
  • 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%.


  • Neural Replication Embroidery
    Overtone’s duration is extended by 1 turn(s). When Ruan Mei has Overtone, all allies’ ATK is increased by 40%.
  • Qeedtide Stroll
    When an enemy’s Weakness is Broken, Ruan Mei’s Break Effect increases by 100% for 2 turn(s).
  • Smoke Rises, Viridescence Sways
    Ultimate Lv. +2, up to a maximum of Lv. 15. Talent Lv. +2, up to a maximum of Lv. 15.
  • Divinity in Reflected Bronze
    When Ruan Mei is on the field, increases CRIT DMG inflicted by allies against Weakness Broken enemies by 40%.
  • Hairpin of the Languid Crafter
    Skill Lv. +2, up to a maximum of Lv. 15. Basic ATK Lv. +1, up to a maximum of Lv. 10.
  • Gauze Amidst a Fall
    The field generated by Ruan Mei’s Ultimate lasts for 1 more turns. When Ruan Mei’s Break Effect is higher than 180% in battle, the Additional DMG multiplier of her Ultimate increases by 24% for every 10% over this Break Effect threshold, up to a maximum DMG multiplier increase of 240%.

What Are the Best Light Cones for Ruan Mei?

Below we've compiled some of the best Light Cones for Ruan Mei to use, based on their attributes and how they align with the character's unique abilities.

Past Self in Mirror

  • Stars:
  • Base Stats:
    • HP: TBC
    • ATK: TBC
    • DEF: TBC
  • Description:
    Instantly regenerates 10 Energy for the wearer at the start of each wave. Increases DMG dealt for all allies by 15% after the wearer uses a skill, increasing All-Type PEN for all SPD Boosted allies by 6%. Lasts for 3 turns.

What Are the Best Relic Sets for Ruan Mei?

Below we've compiled some of the best Relics sets for Ruan Mei to equip, based upon their buffs and how they align with the character's abilities.

Thief of Shooting Meteor

  • 2 Set: Increases Break Effect by 16%.
  • 4 Set: Increases the wearer’s Break Effect by 16%. When the wearer inflicts Weakness Break on an enemy, regenerates 3 Energy.
  • Location: Path of Jabbing Punch

Penacony Land of Dreams

  • 2 Set: Increases wearer’s Energy Regeneration Rate by 5%. Increases DMG for all other allies with the same damage type as the wearer by 10%.
  • Location: Simulated Universe

Priority Stats

  • Body: ATK%
  • Feet: SPD
  • Sphere: ICE DMG%
  • Link Rope: BREAK EFFECT%

Preferred Sub Stats

  • SPD
  • ATK%

Did you find this page on the best builds for Ruan Mei in Honkai: Star Rail helpful? Take a look at our Honkai: Star Rail guide, and let us know in the comments section below.