Best Ruan Mei Honkai Star Rail build: Relics, Light Cones, Eidolons, and abilities

James Busby
A screenshot from Ruan Mei trailer

Ruan Mei in Honkai Star Rail is a new 5-star Ice unit from the Path of Harmony. In case you need help with her, including Relics, Eidolons, Light Cones and more, check out our guide below.

Ruan Mei ever since her first reveal has been one of the most highly anticipated units in the game. Her design and aesthetics attracted fans from all across the world and players were eager for her release.

However, with her becoming playable, players have realized that there is a lot more to her than just the design. Ruan Mei is by far the best support unit in the game and she brings forth a new meta that changes everything we have known about Honkai Star Rail until now.

Thus, if you are looking to pull for her in the game, we’ve got you covered. Here is all you need to know with regard to a detailed guide for Ruan Mei that will help you get going.


Ruan Mei abilities in Honkai Star Rail

A screenshot from the game Honkai Star Rail
Ruan Mei Traces are exceptionally strong in this game
  • Basic Attack – Threading Fragrance: Deals Ice DMG equal to 100% of Ruan Mei’s ATK to a single target enemy.
  • Skill – Strings Sing 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 16.0% and Weakness Break Efficiency increases by 50%.
  • 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.
  • 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.
  • 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, additionally increases the Toughness-Reducing DMG of this attack by 100%. And 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.


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

Ruan Mei Eidolons in Honkai Star Rail

A screenshot from the game Honkai Star Rail
Ruan Mei Eidolon 1 is quite good for free-to-play players
  • Level One – Neuronic Embroidery: While the Ultimate’s field is deployed, the DMG dealt by all allies ignores 20% of the target’s DEF.
  • Level Two – Reedside Promenade: With Ruan Mei on the field, all allies increase their ATK by 40% when dealing DMG to enemies with Weakness Break.
  • Level Three – Viridescent Pirouette: Ultimate Lv. +2, up to a maximum of Lv. 15. Talent Lv. +2, up to a maximum of Lv. 15.
  • Level Four – Chatoyant Éclat: When an enemy target’s Weakness is Broken, Ruan Mei’s Break Effect increases by 100% for 3 turn(s).
  • Level Five – Languid Barrette: Skill Lv. +2, up to a maximum of Lv. 15. Basic ATK Lv. +1, up to a maximum of Lv. 10.
  • Level Six – Sash Cascade: Extends the duration of the Ultimate’s field by 1 turn(s). The Talent’s Break DMG multiplier additionally increases by 200%.

Best Ruan Mei Light Cone in Honkai Star Rail

A screenshot from the game Honkai Star Rail
Ruan Mei’s 5-star Light Cone is the best one for her

The best Light Cone for Ruan Mei in Honkai Star Rail is Past Self in Mirror. This Light Cone is extremely powerful as it Increases the wearer’s Break Effect by 60%-100%. When the wearer uses their Ultimate, it increases all allies’ DMG by 24%-40%, lasting for 3 turns.

Should the wearer’s Break Effect exceed or equal to 150%, 1 Skill Point will be recovered. At the start of each wave, all allies regenerate 10.0 Energy immediately. This Light Cone can only be obtained from Light Cone warp whenever it becomes available.

However, if you are looking for something more affordable, Memories of the Past is a very good 4-star option. This Light Cone is exceptional for Ruan Mei, especially if you have it at Superposition 5. You can also use But the Battle Isn’t Over, but it is not as good as Memories of the Past.

Best Relic and Ornament set for Ruan Mei in Honkai Star Rail

The best Relic set for Ruan Mei in Honkai Star Rail Thief of Shooting Meteor and Messenger Traversing Spacehacker. The set bonus for these Relic sets has been listed below:

Thief of Shooting Meteor

  • 2-pc bonus: Increases Break Effect by 16%
  • 4-pc bonus: Increases the wearer’s Break Effect by 16%. When the wearer inflicts Weakness Break on an enemy, regenerates 3 Energy.

Messenger Traversing Spacehacker

  • 2-pc bonus: Increases speed by 6%
  • 4-pc bonus: When the wearer uses their Ultimate on an ally, SPD for all allies increases by 12% for 1 turn(s). This effect cannot be stacked.

Using a mixture of both of these sets will hail the best results, granting a good amount of utility to Ruan Mei with speed and break effect.

The best Ornament set for Ruan Mei is Fleet of the Ageless. This ornament set grants the wearer 12% max HP and also grants allies 8% ATK if they reach a speed of 120 or higher. This is by far the best set if you’re looking for more general usage of Ruan Mei.

Alternatively, you could also run Penacony, Land of the Dreams as an Ornament set. This increases the wearer’s Energy Regeneration Rate by 5% and also increases damage for all other allies with the same DMG type as the wielder by 10%. This set is fantastic if you’re running powerful ice units like Jingliu, who can greatly benefit from this effect.

Trace level-up and stat requirement for Ruan Mei in Honkai Star Rail

The traces that you need to level-up for Ruan Mei in Honkai Star Rail are as follows:

  • Skill
  • Ultimate
  • Talent

The stat requirement for Ruan Mei in Honkai Star Rail has been listed in the following table:

Main StatSub Stat
Body: HP%DEF%
Sphere: HP%DEF%
Rope: Energy RegenBreak Effect

Best Ruan Mei team comp in Honkai Star Rail

A screenshot from the game Honkai Star Rail
Best Ruan Mei team comp

Ruan Mei is an exceptionally powerful unit in Honkai Star Rail. She is the meta for the coming days and it will be a mistake to miss out on her. She can work in a wide variety of teams, but the best one you can go for is Jingliu, Ruan Mei, Gepard, and Pela.

This mono-Ice team can crush through all forms of content in the game with ease. This team is also quite efficient as Pela is a 4-star unit and Gepard is easily available from the standard Event Warp. Jingliu is a limited unit, but if you have her, then assembling this particular team is not that hard. You can also replace Gepard with Luocha for an equally powerful team.

Additionally, you can also go for Dan Heng- Imbibitor Lunae, Ruan Mei, Hanya, and Luocha. Finally, if you want a more free-to-play option, you can go for Ruan Mei, Dan Heng, Asta, and Natasha.

Ruan Mei Honkai Star Rail trailer

On December 26, 2023, HoYoverse released the official trailer for Ruan Mei in Honkai Star Rail. If you have not watched it yet, you can check it out from the link provided below:

So, there you have it, that’s everything we know about Ruan Mei in Honkai Star Rail. Make sure you check out our Honkai Star Rail page for all the latest news and guides. 

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