What is the best Light Cone for Xueyi?

I Am As You Behold is the closest fit on the data: it is a 5-star Destruction Light Cone with 635 base ATK at level 80, and its passive acts on ATK. A Trail of Bygone Blood is the best 4-star alternative.

Which relic set should Xueyi use?

Poet of Mourning Collapse. Its 2-piece bonus is: Increases Quantum DMG by 10%. Its 4-piece bonus is: Decreases the wearer's SPD by 8%. Before entering battle, if the wearer's SPD is lower than 110/95, increases the wearer's CRIT Rate by 20%/32%. This effect applies to the wearer's memosprite at the same time.

Which Planar Ornament should Xueyi use?

Firmament Frontline: Glamoth. Its 2-piece bonus is: Increases the wearer's ATK by 12%. When the wearer's SPD is equal to or higher than 135/160, the wearer deals 12%/18% more DMG. Planar Ornaments have no 4-piece bonus; the sphere and the rope are the whole set.

Xueyi, Quantum Destruction character | Honkai: Star Rail

All characters

The Xianzhou Luofu

Xueyi Build

Build guide · Honkai: Star Rail

QuantumDestructionMain DPS

English voice: Jenny Yokobori

The best Xueyi build in Honkai: Star Rail (Version 4.6) is Indelible Promise with Genius of Brilliant Stars. Updated November 5, 2026

Abilities Traces Materials Eidolons

Where these rankings come fromThe light cone order, relic sets and stat priorities on this tab are prydwen.gg’s, measured in play and rephrased. Relative damage figures are ratios against the bottom of each ranking, not absolute numbers, and each one holds only for the superimposition and team its row states. Everything else (base stats, passive text, material totals) is read from the game’s own data.

Light cones

2 ranked

Indelible Promise, 4★ Destruction Light Cone | Honkai: Star Rail

BISIndelible Promise

102.12% at S5

476

Base ATK · lv 80

953 HP331 DEF

On the Fall of an Aeon, 5★ Destruction Light Cone | Honkai: Star Rail

#2On the Fall of an Aeon

100% at S5

529

Base ATK · lv 80

1058 HP397 DEF

Relics

2 sets

CoreGenius of Brilliant Stars

QUA Weak

2PCIncreases Quantum DMG by 10%.

4PCWhen the wearer deals DMG to the target enemy, ignores 10% DEF. If the target enemy has Quantum Weakness, the wearer additionally ignores 10% DEF.

Also works

Thief of Shooting Meteor

Planar ornaments

Sphere and rope · 2-piece only

CoreTalia: Kingdom of Banditry

145 Speed

2PCIncreases the wearer's Break Effect by 16%. When the wearer's SPD reaches 145 or higher, the wearer's Break Effect increases by an extra 20%.

Also works

Main stats

Ultimate · 120 energy

Body: CRIT Rate >= CRIT DMG
Feet: Speed >= ATK%
Planar Sphere: ATK% > Quantum DMG
Link Rope: Break Effect

Substat priority

Highest first

1SPD (breakpoint)Best
2BREAK EFFECT%
3CRIT RATE = CRIT DMG
4ATK%

Break effect is Xueyi's best damage scaling stat when including Quantum Entanglement in the equation. Stacking only Break Effect will not yield the best results though, so aim for a good CRIT and CRIT DMG ratio and as high Break Effect as possible. Pick up ATK% as a bonus and ensure you have enough Speed through your teammates or sub stats to hit your desired Speed breakpoint.

Trace priority

Level in this order

#1
Skill = Talent
Max first
#2
Ultimate
Then
#3
Basic
Next

Major traces, best first: Clairvoyant Loom (A2) > Perspicacious Mainframe (A6) > Intrepid Rollerbearings (A4)

Best Eidolons

E3 and E5 raise levels only

E1Dvesha, Inhibited
E2Klesha, Breached
E3Level bump
E4Karma, Severed
E5Level bump
E6Saṃsāra, Mastered

E1
Dvesha, Inhibited
Game text
Increases the DMG dealt by the Talent's Follow-Up ATK by 40%.
E2
Klesha, Breached
Game text
Talent's Follow-Up ATK Reduces enemy Toughness regardless of Weakness types. At the same time, restores Xueyi's HP by an amount equal to 5% of her Max HP. When breaking Weakness, triggers the Quantum Break Effect.
E4
Karma, Severed
Game text
When using Ultimate, increases Break Effect by 40% for 2 turn(s).
E6
Saṃsāra, Mastered
Game text
The max stack limit for Karma decreases to 6.

Teams

No composition on the site currently uses Xueyi. The best teams page carries the ones that are written up.

Honkai: Star Rail 4★ Quantum Destruction Main DPS

Xueyi build summary

Updated November 5, 2026

Indelible Promise tops the light cone ranking for Xueyi, at 102.12% relative damage at S5, ahead of On the Fall of an Aeon. That order is prydwen.gg's, measured in play and rephrased here; every row of it sits under Light cones below.

Run Genius of Brilliant Stars on Xueyi, with Thief of Shooting Meteor behind it. The planar ornament is Talia: Kingdom of Banditry. Main stats are CRIT Rate >= CRIT DMG body, Speed >= ATK% feet, ATK% > Quantum DMG sphere, Break Effect rope. Roll substats in the order SPD (breakpoint) > BREAK EFFECT% >= CRIT RATE = CRIT DMG > ATK%.

Trace priority is Skill = Talent > Ultimate > Basic. The Ultimate costs 120 energy, which is what an Energy Regeneration Rate target has to clear.

Role: Main DPS / Support
Best light cone: Indelible Promise
Alternatives: On the Fall of an Aeon
Relic set: Genius of Brilliant Stars
Planar ornament: Talia: Kingdom of Banditry
Main stats: CRIT Rate >= CRIT DMG body, Speed >= ATK% feet, ATK% > Quantum DMG sphere, Break Effect rope
Substat priority: SPD (breakpoint) > BREAK EFFECT% >= CRIT RATE = CRIT DMG > ATK%
Trace priority: Skill = Talent > Ultimate > Basic
Ultimate energy cost: 120 energy
Key ascension material: 50× Nail of the Ape
Last updated: November 5, 2026

Xueyi build FAQ

What is the best Light Cone for Xueyi?: I Am As You Behold is the closest fit on the data: it is a 5-star Destruction Light Cone with 635 base ATK at level 80, and its passive acts on ATK. A Trail of Bygone Blood is the best 4-star alternative.
Which relic set should Xueyi use?: Poet of Mourning Collapse. Its 2-piece bonus is: Increases Quantum DMG by 10%. Its 4-piece bonus is: Decreases the wearer's SPD by 8%. Before entering battle, if the wearer's SPD is lower than 110/95, increases the wearer's CRIT Rate by 20%/32%. This effect applies to the wearer's memosprite at the same time.
Which Planar Ornament should Xueyi use?: Firmament Frontline: Glamoth. Its 2-piece bonus is: Increases the wearer's ATK by 12%. When the wearer's SPD is equal to or higher than 135/160, the wearer deals 12%/18% more DMG. Planar Ornaments have no 4-piece bonus; the sphere and the rope are the whole set.