Check out this guide to learn how to beat the Feixiao Boss fight, also known as Shadow of Feixiao and Ecliptic Inner Beast in Honkai: Star Rail. We also have full details on the Feixiao boss fight's best teams, weaknesses, drops, and abilities.

Shadow of Feixiao and Ecliptic Inner Beast Boss Fight Overview

Shadow of Feixiao and Ecliptic Inner Beast Basic Info

Shadow of Feixiao and Ecliptic Inner Beast Information
Shadow of Feixiao and Ecliptic Inner Beast
World	Xianzhou Luofu
Weaknesses
Resistances	Control Effects RES

Shadow of Feixiao and Ecliptic Inner Beast Summon Info

Nebula Devourer (Phase 2 and 3)	Weaknesses
	Resistances	Control Effects RES
Planeshred Claws (Phase 2 and 3)	Weaknesses
	Resistances	Control Effects RES
Worldpurge Tail (Phase 2 and 3)	Weaknesses
	Resistances	Control Effects RES

Shadow of Feixiao and Ecliptic Inner Beast Boss Fight Location

Trailblaze Continuance Boss

The Shadow of Feixiao and Ecliptic Inner Beast is a boss you will first encounter during the Trailblaze Continuance, Finest Duel Under the Pristine Blue: Part II.

Finest Duel Under the Pristine Blue II Guide

Found in the Skysplitter

Location	Skysplitter, Xianzhou Luofu

Shadow of Feixiao and Ecliptic Inner Beast is a weekly Echoes of War Boss that can be unlocked after completing the Under the Spell mission during the Finest Duel Under the Pristine Blue: Part II Trailblaze Continuance!

You can find the Echoes of War in the Skysplitter area of the Xianzhou Luofu.

Echoes of War Weekly Bosses and Drops

Shadow of Feixiao and Ecliptic Inner Beast Boss Fight Best Teams

Free to Play Team

F2P Team
Xueyi	Asta	March 7th (Imaginary)	Lynx

March 7th (The Hunt) synergizes with Xueyi as her Shifu and since Xueyi is Quantum, March can also reduce the Toughness of Quantum weak enemies with her attacks.

Inflicting Weakness Break on parts of Shadow of Feixiao is the key to this battle, so both do well in this regard. Asta buffs the team's SPD and ATK while Lynx heals and cleanses the team's debuffs.

List of All Free Characters

Fire DPS Team

Fire DPS
Firefly	Trailblazer (Imaginary)	Ruan Mei	Gallagher

Firefly does very well in this fight since she can hit multiple enemies with her abilities and easily inflict Weakness Break on them. Trailblazer (Imaginary) increases the team's Break Effect while providing Super Break DMG.

Ruan Mei is amazing here since she can increase Break Efficiency for the whole party, along with the other offensive buffs she brings. Gallagher scales with Break Effect and heals the party.

Physical DPS Team

Physical DPS
Boothill	Bronya	Ruan Mei	Gallagher

Despite being a single-target DPS, Boothill can perform extremely well thanks to his high Toughness and Break DMG. Bronya can provide more turns to Boothill to help him inflict Weakness Break on the Shadow of Feixiao and her summons.

Quantum DPS Team

Quantum DPS
Qingque	Sparkle	Silver Wolf	Fu Xuan

Qingque works here as well since she can damage multiple enemies with her Enhanced Basic ATK. Sparkle provides the team with Skill Points and can Advance Forward Qingque, along with providing other offensive buffs.

Silver Wolf can implant a missing Weakness on a summon that doesn't have a Quantum Weakness.

Wind DPS Team

Wind DPS
Feixiao	Topaz	Robin	Aventurine

Feixiao also does well in this fight since some enemies are weak to Wind and her Ultimate can ignore enemy Weaknesses. With Topaz and Aventurine, Feixiao can easily get stacks of Flying Aureus thanks to their Follow-Up Attacks.

Topaz increases the Follow-up attack DMG enemies take while Aventurine increases the CRIT DMG they take and provide shields for the team.

How to Beat Shadow of Feixiao & Ecliptic Inner Beast Boss Fight

Inflict Weakness Break to Remove Safeguard

The Shadow of Feixiao and her summons will receive less damage thanks to their Safeguard talent. To remove Safeguard on an enemy, you must inflict Weakness Break on it.

Inflict Weakness Break on the Resonating Part to Advance Forward

Starting from Phase 2 onwards, you will have to deal with the Resonating Parts. Inflict Weakness Break on the Resonating Part to deal increased damage on it and have all allies advance forward in the turn order.

We recommend inflicting Weakness Break on the Nebula Devourer first to prevent it from inflicting Outrage on your party members.

Inflict Weakness Break on All Parts to Prevent Massive DMG

In Phase 3, the Shadow of Feixiao can use Wreathed in Storm to charge up and unleash Sweep the Heavens, Swallow the Earth on her next turn. This party-wide attack will deal increased DMG depending on how many summons that have yet to be Weakness Broken.

Your goal here is to Weakness Break all of the summons to reduce the damage dealt. You can easily do this by taking out one part at a time since inflicting Weakness Break will advance all party members in the turn order.

Shadow of Feixiao and Ecliptic Inner Beast Boss Fight Talents and Abilities

All Boss Fight Phases
Phase 1	Phase 2	Phase 3

Phase 1 - Shadow of Feixiao and Ecliptic Inner Beast Skills

All Talents and Abilities
◆	Gunblade: Swordfang (Ability) Deals Wind DMG to one designated Party target.
◆	Great Ax: Irontalon (Ability) Deals Wind DMG to a single target, with a high chance to inflict Weaken.
◆	Heaven's Binds (Ability) Enhances self to gain additional action.
◆	Passing Tempest (Ability) Deals Wind DMG to all Party targets.
◆	Safeguard (Talent) Enters the Safeguard state. While not Weakness Broken, reduces DMG received. Once Weakness is Broken, action will be delayed. After Weakness is Broken, increases DMG received.

Return to All Phases ▲

Phase 2 - Shadow of Feixiao and Ecliptic Inner Beast Skills

All Talents and Abilities
◆	Beastbond Strike (Ability) The additional action from Shadow of "Feixiao" will resonate with the Ecliptic Inner Beast's body parts. Resonance will restore a certain amount of Toughness for the Ecliptic Inner Beast's parts and increase the Toughness value reduced when attacked. The next action becomes Enhanced. Resonance with "Nebula Devourer" has a high chance of inflicting Outrage on all Party targets. Resonance with "Planeshred Claws" additionally greatly increases DMG. Resonance with "Worldpurge Tail" has a high chance of inflicting Weaken on all Party targets.
◆	Gunblade: Swordfang (Ability) Deals Wind DMG to one designated Party target.
◆	Great Ax: Irontalon (Ability) Deals Wind DMG to a single target, with a high chance to inflict Weaken.
◆	Heaven's Binds (Ability) Enhances self to gain additional action.
◆	Safeguard (Talent) Enters the Safeguard state. While not Weakness Broken, reduces DMG received. Once Weakness is Broken, action will be delayed. After Weakness is Broken, increases DMG received.

Return to All Phases ▲

Phase 3 - Shadow of Feixiao and Ecliptic Inner Beast Skills

All Talents and Abilities
◆	Sweep the Heavens, Swallow the Earth (Ability) Deals massive Wind DMG to all Party targets and Enhances this unit based on the parts that have yet to be Weakness Broken. Every part that has yet to be Broken will increase the DMG dealt by this ability, and this ability will enhance the parts that are not Weakness Broken.
◆	Beastbond Strike (Ability) The additional action from Shadow of "Feixiao" will resonate with the Ecliptic Inner Beast's body parts. Resonance will restore a certain amount of Toughness for the Ecliptic Inner Beast's parts and increase the Toughness value reduced when attacked. The next action becomes Enhanced. Resonance with "Nebula Devourer" has a high chance of inflicting Outrage on all Party targets. Resonance with "Planeshred Claws" additionally greatly increases DMG. Resonance with "Worldpurge Tail" has a high chance of inflicting Weaken on all Party targets.
◆	Gunblade: Swordfang (Ability) Deals Wind DMG to one designated Party target.
◆	Great Ax: Irontalon (Ability) Deals Wind DMG to a single target, with a high chance to inflict Weaken.
◆	Heaven's Binds (Ability) Enhances self to gain additional action.
◆	Wreathed in Storm (Ability) Resonates with all parts of the Ecliptic Inner Beast and dispels their Weakness Broken state. This unit cannot be attacked before its next action. In the next action, this unit will use "Sweep the Heavens, Swallow the Earth" on all Party targets.
◆	Safeguard (Talent) Enters the Safeguard state. While not Weakness Broken, reduces DMG received. Once Weakness is Broken, action will be delayed. After Weakness is Broken, increases DMG received.

Return to All Phases ▲

Summoned Enemies Talents and Abilities

Nebula Devourer Skills

All Talents and Abilities
◆	Breathing Ether (Ability) Use while in the Resonate State. Deals Wind DMG to all targets, with a high chance to inflict Outrage.
◆	Nebula Eater (Ability) Deals minor Wind DMG to all targets.
◆	Safeguard (Ability) Enters the Safeguard state. While not Weakness Broken, reduces DMG received. Once Weakness is Broken, action will be delayed. After Weakness is Broken, increases DMG received.

Planeshred Claws Skills

All Talents and Abilities
◆	Firmament Divider (Ability) Use while in the Resonance state. Deals massive Wind DMG to one designated Party target and any adjacent targets.
◆	Plane Shred (Ability) Deals minor Wind DMG to one designated Party target and any adjacent targets.
◆	Safeguard (Ability) Enters the Safeguard state. While not Weakness Broken, reduces DMG received. Once Weakness is Broken, action will be delayed. After Weakness is Broken, increases DMG received.

Worldpurge Tail Skills

All Talents and Abilities
◆	Realm Exterminator (Ability) Use while in the Resonate State. Deals Wind DMG to all targets, with a high chance to inflict Weaken.
◆	Worldpurge (Ability) Deals minor Wind DMG to all Party targets.
◆	Safeguard (Ability) Enters the Safeguard state. While not Weakness Broken, reduces DMG received. Once Weakness is Broken, action will be delayed. After Weakness is Broken, increases DMG received.

Shadow of Feixiao and Ecliptic Inner Beast Boss Weaknesses & Resistances

Weaknesses

Shadow of Feixiao and Ecliptic Inner Beast Weaknesses
Quantum	Physical	Fire

Use the characters with the same elements above to easily defeat Shadow of Feixiao and Ecliptic Inner Beast!

Resistances

All Resistances
Resistances	Control Effects RES

Avoid using characters with the elements or skills the same as the above. It will lessen the damage against Shadow of Feixiao and Ecliptic Inner Beast!

Shadow of Feixiao and Ecliptic Inner Beast Boss Fight Drops and Rewards

Shadow of Feixiao and Ecliptic Inner Beast Drops

Ascension Mats and Relics
Auspice Sliver	Lucent Afterglow	The Ashblazing Grand Duke	Watchmaker, Master of Dream Machinations
Possible Light Cone Drops
What Is Real	Dreamville Adventure	Final Victor	Flames Afar
Destiny’s Threads Forewoven	The Day The Cosmos Fell	It’s Showtime

All Items List

Other Item Drops

Items Dropped
Credit	Trailblaze EXP

Characters that Use Shadow of Feixiao and Ecliptic Inner Beast Boss Materials

Lingsha

Moze

All Character Ascension & Trace Materials

Honkai: Star Rail Related Guides

List of All Bosses

Echoes of War Weekly Bosses

Doomsday Beast	Cocolia, Mother of Deception	Phantylia the Undying
Starcrusher Swarm King - Skaracabaz (Synthetic)	Harmonious Choir - The Great Septimus	Shadow of Feixiao and Ecliptic Inner Beast

Echoes of War Weekly Bosses and Drops

Stagnant Shadows Field Bosses

Disciples of Sanctus Medicus - Shape Shifter	Ice Out of Space	Decaying Shadow
Frigid Prowler	Automaton Direwolf	Blaze Out of Space
Guardian Shadow	Stormbringer	Voidranger - Trampler
The Ascended	Aurumaton Gatekeeper	Abundance Sprite - Malefic Ape
Searing Prowler	Aurumaton Spectral Envoy	Dreamjolt Troupe's Sweet Gorilla
Dreamjolt Troupe's Beyond Overcooked	Memory Zone Meme - Shell of Faded Rage	Senior Staff - Team Leader
Present Inebriated in Revelry	Howling Casket

Stagnant Shadow Field Bosses and Drops