Xueyi is a Quantum element character who follows the Path of Destruction, specializing in follow-up attacks and damage scaling based on her ATK and Break Effect. Her unique mechanic revolves around Karma stacks, which she gains by hitting enemies or when allies trigger Weakness Breaks. Once she reaches 8 stacks of Karma, Xueyi automatically unleashes a powerful follow-up attack that ignores enemy Toughness, making her effective even against enemies without Quantum Weakness. Her Ultimate scales with Break Effect and contributes additional Karma, while her Talent allows her to recover stacks quickly during battles. This makes her a hybrid unit who benefits from both Break-oriented teams and traditional DPS roles, thriving in fights where consistent triggering of Weakness Break and follow-up attacks are possible.
Best Cavern Relics
(2) Increases Quantum DMG by 10%.
(4) When the wearer deals DMG to the target enemy, ignores 10% DEF. If the target enemy has Quantum Weakness, the wearer additionally ignores 10% DEF.
Genius of Brilliant Stars is the best relic set for Xueyi, as it enhances her Quantum DMG and allows her to ignore enemy DEF—a valuable stat since her follow-up attacks and Ultimate benefit greatly from it. The set's 4-piece effect becomes especially effective when enemies are inflicted with Quantum Weakness, making it ideal for maximizing her damage in Break-oriented and Quantum-focused teams.
(2) Increases Break Effect by 16%.
(4) If the wearer's Break Effect is 150% or higher, the Break DMG dealt to the enemy target ignores 10% of their DEF. If the wearer's Break Effect is 250% or higher, the Super Break DMG dealt to the enemy target additionally ignores 15% of their DEF.
Iron Cavalry Against the Scourge is a great alternative relic set for Xueyi, especially in Super Break Teams. This set allows her to ignore enemy DEF when her Break Effect reaches a certain threshold, making it highly effective for maximizing her Follow-up and Break DMG. When built properly, this set synergizes well with her kit that revolves around frequent Toughness breaking and follow-up attacks.
Best Planar Ornaments
(2) Increases 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%.
Talia: Kingdom of Banditry is Xueyi’s best planar ornament set, as it provides a significant Break Effect boost, which directly enhances her overall damage output.
(2) Increases the wearer's ATK by 12%. When the wearer's SPD reaches 120 or higher, the wearer's ATK increases by an extra 12%.
Space Sealing Station is a solid alternative for Xueyi. It provides a bonus ATK stat, which helps boost her damage, as long as she reaches the speed threshold (typically 120 SPD).
(2) 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.
Firmament Frontline: Glamoth is another viable alternative for Xueyi. It increases both ATK and overall DMG, making it a strong option for general damage amplification. However, it does require Xueyi to reach at least 135 SPD to activate its minimum DMG boost effect, which may need some SPD investment depending on your build.
Best Stats

Body
CRIT Rate / CRIT DMG

Boots
SPD

Sphere
Quantum DMG Boost

Rope
Break Effect
Substats
Break Effect / SPD / CRIT DMG / CRIT Rate
info
Xueyi’s main stat priority is Break Effect, since most of her damage scales from it. After that, ATK% and Crit Rate/DMG help improve her overall output. Speed is also important, especially when using sets like Firmament Frontline: Glamoth or Space Sealing Station, which require meeting specific SPD thresholds to activate their buffs.
Best Light Cones
SourceLight Cone Event Warp
Metamorphosis
Increases the wearer's Break Effect by 60~100%. When the wearer deals Break DMG to an enemy target, inflicts Routed on the enemy, lasting for 2 turn(s). Targets afflicted with Routed receive 24.0~40.0% increased Break DMG from the wearer, and their SPD is lowered by 20%. Effects of the same type cannot be stacked.Whereabouts Should Dreams Rest is Xueyi’s best Light Cone, as it significantly boosts her Break Effect and applies the Routed debuff, which increases the Break DMG enemies take—perfectly complementing her kit and maximizing her damage potential in Break-focused teams.
Moth To Flames
When the wearer attacks, increases their ATK by 8~16% in this battle. This effect can stack up to 4 time(s). After the wearer breaks an enemy's Weakness, increases DMG dealt by 12~24%, lasting for 2 turn(s).On the Fall of an Aeon is a strong Light Cone for Xueyi, offering a stacking ATK boost and an additional DMG bonus when she inflicts Weakness Break—making it especially effective in Break-oriented teams where she can consistently trigger its effects.
SourceStellar Warp, Character Event Warp, Light Cone Event Warp
Inheritance
Increases the wearer’s Break Effect by 28~56%. When the wearer uses their Ultimate, increases CRIT Rate by 15~30%, lasting for 2 turn(s).Indelible Promise is a great Light Cone for Xueyi as it increases her ATK and boosts her CRIT Rate after using her Ultimate, enhancing her burst potential—especially when built with enough Break Effect to complement her kit.
Massacre
Increases the wearer's CRIT Rate by 12~20%. The Skill DMG and Ultimate DMG dealt by the wearer increases by 24~40%.A Trail of Bygone Blood is a solid Light Cone for Xueyi, as it boosts the DMG of her Skill and Ultimate while also increasing her CRIT Rate, making it a strong choice for enhancing her overall damage output.
SourceStellar Warp, Departure Warp, Character Event Warp, Light Cone Event Warp
Rye Under the Sun
Increases the wearer's ATK by 16~32%. When the wearer defeats an enemy, the wearer's CRIT Rate increases by 12~24% for 3 turn(s).Under the Blue Sky is a great Light Cone for Xueyi since it increases her ATK and boosts her CRIT Rate when she defeats an enemy.
Massacre
Increases the wearer's CRIT Rate by 12~20%. The Skill DMG and Ultimate DMG dealt by the wearer increases by 24~40%.Under the Blue Sky is a great Light Cone for Xueyi, as it increases her ATK and boosts her CRIT Rate after defeating an enemy.
SourceStellar Warp, Departure Warp, Character Event Warp, Light Cone Event Warp
Fantastic Adventure
When the wearer uses Basic ATK, Skill, or Ultimate to attack enemies, the wearer gains one stack of Mischievous. Each stack increases the wearer's ATK by 12~24%.Since the ATK buff is gained through three separate conditions, this Light Cone’s effect is much less appealing due to how long it takes to fully activate. This makes it a suboptimal choice for fast-paced battles or enemies that don’t meet all the conditions consistently.