Honkai: Star Rail Jing Yuan Build Guide: E4 Rotations and Teams

At Eidolon 4 (E4), Jing Yuan in Honkai: Star Rail gains a flat energy refund for every strike landed by the Lightning-Lord. This mechanic stabilizes his 130-energy requirement, enabling reliable two-to-three-turn Ultimate cycles without heavy reliance on external energy batteries. To capitalize on this spike, build around high-stack Lightning-Lord strikes using Skill Point (SP)-positive action buffers and follow-up relic sets.

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How E4 Alters Jing Yuan's Mechanics and Rotation

The Lightning-Lord relies on Jing Yuan casting his Skill and Ultimate to gain speed and stack count. Because the summon deals bounce damage across targets, higher stack counts directly translate into greater single-target concentration and faster toughness reduction.

At E0, maintaining Ultimate uptime requires constant support investment or an Energy Regeneration Rate Rope. At E4, the energy gained per Lightning-Lord hit replaces the need for defensive energy main stats, letting you run an ATK% Rope for increased damage scaling.

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Relic and Planar Ornament Priorities

Maximize the multi-hit nature of the Lightning-Lord by equipping relics tailored to follow-up attacks.

• 4-Piece The Ashblazing Grand Duke: The premier Cavern Relic set. Because the Lightning-Lord hits multiple times in a single turn, each strike quickly maxes out the 4-piece ATK bonus, applying the full buff to all subsequent hits in that action.
• The BananAmusement Park (2-Piece): Top Planar Ornament choice for pure summon and follow-up Crit DMG scaling.
• Inert Salsotto (2-Piece): A reliable Planar alternative that provides Crit Rate and increases Ultimate and follow-up damage once Jing Yuan reaches at least 50% Crit Rate.

Recommended Main Stats and Sub-stats

• Body: Crit Rate or Crit DMG (aim for roughly 70% combat Crit Rate and 140%+ Crit DMG)
• Feet: ATK% (recommended when running action-advance supports)
• Planar Sphere: Lightning DMG Boost
• Link Rope: ATK% (E4 covers energy requirements; use Energy Regeneration Rate only at E0 if energy batteries are unavailable)

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Light Cone Selection

Equip Light Cones that enhance follow-up attacks, Ultimate damage, or raw Crit values:

1. Before Dawn (5-Star Signature): The optimal weapon. Provides passive Crit DMG, boosts Skill and Ultimate damage, and grants the "Somatic Efficacity" buff, which significantly increases follow-up damage after using a Skill or Ultimate.
2. Night on the Milky Way (5-Star): Effective in multi-target battles and Pure Fiction due to ATK scaling per enemy and damage buffs on Weakness Break.
3. Today Is Another Peaceful Day (4-Star Battle Pass): Grants a consistent universal damage boost based on Jing Yuan's high maximum energy cap.
4. The Seriousness of Breakfast / Geniuses' Repose (4-Star): Accessible options that offer ATK boosts and conditional damage or Crit DMG after defeating targets.

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Team Synergies and SP Management

Jing Yuan must cast his Skill every turn to feed stacks and speed to the Lightning-Lord. If he is forced to use a Basic Attack, the Lightning-Lord drops in speed and risks missing action cycles. His teammates must generate enough Skill Points to sustain his casts alongside support abilities.

• Action Advancers: Pair him with Sparkle, Sunday, or Bronya. Sparkle is especially valuable because she increases the maximum SP pool and restores points, preventing SP deficits when advancing Jing Yuan.
• Buffers and Batteries: Tingyun provides ATK buffs and supplemental flat energy while remaining SP-positive. Robin adds coordinated attacks and follow-up multipliers that trigger alongside high-hit Lightning-Lord strikes.
• Sustain Options: Aventurine offers shields, crowd-control resistance, and follow-up synergy without consuming SP. Huohuo provides cleanses and teamwide energy regeneration if additional battery support is needed.

Action Execution: Sequence your sustain and secondary support to use Basic Attacks ahead of Jing Yuan and your action advancer. Keep Jing Yuan's Skill active on every turn to ensure the Lightning-Lord regularly attacks at maximum stack thresholds.