Qiuyuan is a 5-star Aero Resonator, who made her debut as a playable unit in the previous version. He is a samurai according to the lore, and as a playable Resonator, his kit is strong enough to be an independent DPS or can support his allies by buffing their Crit and Echo Skill DMG.

So, if you are still interested in building this samurai, then keep reading because in the following part, we have listed everything from his best weapon, the Echoes Set, Stat priority, and more.
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Best Weapons for Qiuyuan
Emerald Sentence
This is his signature weapon, and of course, it's his beast choice as it was designed while keeping his kit in mind. It also provides strong buffs for his Heavy Attack DMG, which is his primary source of DMG. This weapon also buffs his Echo Skill DMG, which can be used when he reaches full stacks. And when he needs Crit Rate buff to increase his squad’s Crit DMG through his Resonance Liberation, then the weapon can provide ATK and Crit Rate buff. This utility makes it the perfect weapon for the Samurai.
Emerald of Genesis
Emerald of Genesis is another excellent option for Qiuyuan. The weapon provides the character with a Crit Rate buff, which helps him to reach a higher Crit Rate and helps in buffing his allies. The weapon's passive provides a modest buff that boosts Qiuyuan’s Energy Regen and ATK%. This Energy Regen helps him to cast his Resonance Liberation at a frequent rate, while the ATK buff is a bonus.
Red Spring
Red Spring is another option that can be used by the Rovers, if they need additional Crit Rate for their Resonator. Other than that, it doesn't help much for Qiuyuan’s kit. The only other buff this weapon offers is the 12% ATK boost which will increase his Basic ATK DMG only.
Lumingioss
If you are planning to go F2P, then Lumingloss provides a massive Heavy Attack DMG boost. It also provides ATK% as its sub-stat, which is decent as it can increase its Basic ATK DMG output. It's a decent weapon if your Echo build can provide a minimum of 65% Crit Rate.

Best Echoes for Qiuyuan
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Echo Set
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Reason
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3pc Law of Harmony
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Most of Qiuyuan’s DMG comes from Echo Skills, which makes the set the most appropriate option for him.Once he enters the battlefield as the on-field character, he willtrigger an effect that will grant him a 30% Heavy ATKDMG while buffing his allies. This is the only Echo set option that will go perfectly with his kit.
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2pc Energy Regen
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He primarily acts as the support unit over a DPS, so in that case, these 2-piece suits suit him the best. This set makes sure he has a good amount of Energy management, which lets him maintain all his buffs even with minimal field time.
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Main Echo for Qiuyuan
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Main Echo
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Reason
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Reminiscence: Fenrico
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This Echo can provide buffs for his Aero and Heavy ATK DMG by 12%. As a playable Resonator who mainly depends on his Heavy Attacks to take his enemy down, Qiuyuan will be having fun.
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Stats overview for Qiuyuan
Weapons
- Emerald Sentence
- Emerald of Genesis
- Red Spring
- Lumingloss
- Feather Edge
Echo Set
- 3pc Law of Harmony
- 2pc Energy Regen
Main Echo
Echoes Main Stats
- Cost 4: Crit Rate
- Cost 3: Aero DMG
- Cost 3: Aero DMG
- Cost 1: ATK%
- Cost 1: ATK%
Echoes Substats
- Crit Rate
- Crit DMG
- Energy Regen
Best teams for Qiuyuan
As mentioned before, Qiuyuan can boost his allies' Echo Skill DMG, which makes him a great support unit for the Main DPS Resonators. However, this boost mainly affects the characters who stay on-field most of the time; keeping that in mind, here are the best team comps for Qiuyuan.
- Galbrena+ Qiuyuan+ Shorekeeper (Best)
- Phrolova+ Qiuyuan+ Cantarella
- Qiuyuan+ Luno+ Shorekeeper
- Qiuyuan+ Ciaccona+ Shorekeeper
These are some of the meta teams that you can run with Qiuyuan, but you are free to pair him with any Resonator of your choice.
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Conclusion
Qiuyuan is a 5-star samurai in Wuthering Waves, who excels in buffing his allies. If you managed to arm him with his signature weapon then look forward to unmatched Heavy Attack DMG output. Also, there are multiple F2P weapon options available, ensuring every Rover can make sure their Samurai can wield a strong sword when they enter the battlefield.