Jia Xu Complete Build Guide

Updated: 2026-03-04 | Sources: Game8, Gamersky, 3DM, Wandoujia

Overview

Jia Xu (贾诩) is an SSR Fire-element Advisor (神纪) agent in Code Kite. He specializes in boosting Skill damage and forms the ultimate duo with Guo Jia for T0 performance.

Why Jia Xu is Must-Have

• 🔥 Skill Damage Buffer: Massively boosts team's Skill damage
• 🎭 Guo Jia Synergy: T0 tier ONLY when paired with Guo Jia
• ⚡ 1-Star Usable: Functional even at lowest constellation
• 🎯 AoE Specialist: Enables devastating group damage comps

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Character Info

Attribute	Value
Rarity	SSR
Element	Fire 🔥
Class	Advisor (神纪)
Role	Buffer / Enabler

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Core Mechanic: Guo Jia Synergy

This is critical: Jia Xu is only T0 when paired with Guo Jia.

Jia Xu Alone	Jia Xu + Guo Jia
T1-T2	T0
Skill buff only	Normal ATK + Skill buff
Good	Broken

How the Synergy Works

1. Guo Jia boosts Normal Attack damage
2. Jia Xu boosts Skill damage
3. Combined: Both buffs active → Massive group damage
4. Destiny Board nodes can enhance this synergy further

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Skill Analysis

Normal Attack

Basic Fire damage. Lower priority than skills.

Active Skill

Team Skill Damage Buff - Significantly increases party's Skill damage.

Ultimate

Fire AoE that benefits from the Skill damage buff.

Passive

Enhanced effects when Guo Jia is present in the team.

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Destiny Board (命盘) Recommendations

Priority Nodes

Node	Effect	Priority
Skill DMG Enhancement	Boost Skill damage	★★★
Guo Jia Synergy	Extra effects when paired	★★★
AoE Enhancement	Group damage boost	★★

Optimal Path

1. Skill damage enhancement (core function)
2. Guo Jia synergy nodes (maximize duo potential)
3. AoE or survival based on content

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Best Team Compositions

T0 Team: Jia Xu + Guo Jia

Position	Agent	Role
Leader	Wang Can	Healer with buff
Member	Jia Xu	Skill buffer
Member	Guo Jia	Normal ATK buffer
Member	Yan Liang / Guo Jie	Tank
Member	A Chan	Main DPS

Rotation:

1. Jia Xu uses Skill buff
2. Guo Jia uses Normal ATK buff
3. A Chan unleashes damage
4. Repeat cycle

Budget Team

Position	Agent	Role
Leader	Shi Zimiao	F2P healer
Member	Jia Xu	Skill buffer
Member	Guo Jia	Normal buffer
Member	Yan Liang	Tank
Member	Lu Su	AoE damage

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Cultivation Guide

Priority Order

Priority	Investment	Reason
1	Level 50	Unlock full skill
2	Skills 4+	Buff effectiveness
3	Destiny Board	Synergy nodes
4	Huaji 3+	Stats boost
5	Breakthrough	Late game push

Resource Allocation

• 1-Star is usable: Don't need high constellation
• Focus resources on Skill levels
• Destiny Board is more important than raw stats

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Pull Recommendation

Should You Pull?

✅ MUST PULL If:

• You have Guo Jia → Instant T0 team
• You want the strongest AoE comp
• Planning Fire-focused teams

⚠️ Consider:

• Without Guo Jia, effectiveness drops significantly
• Still usable but not T0

❌ Skip If:

• No plans to get Guo Jia
• Already have strong established teams
• Limited gacha resources

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Gameplay Tips

1. Order matters: Jia Xu buffs → then attack
2. Don't neglect Guo Jia: They're a package deal
3. Skill timing: Use before big damage turns
4. Team protection: He's squishy, needs tank/healer

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Comparison with Alternatives

Agent	Role	vs Jia Xu
Yang Xiu	Buffer	Less synergy, more standalone
Lu Su	AoE	Different niche (retreat mechanic)

Jia Xu is irreplaceable in Guo Jia comps.