Weapon details
An exotic weapon with an extremely long blade on the top and a crescent blade at the bottom. It found its way into Liyue through foreign traders. With practice, it can deal heavy damage.
Infusion Needle
R5
After picking up an Elemental Orb/Particle, Normal and Charged Attacks deal additional DMG equal to 40% of ATK for 5s.
Phase 0
Level cap: 20
Adventure rank required: -
Mora: -
Materials
-
Phase 1
Level cap: 40
Adventure rank required: 15
Mora: 5,000
Materials
Hunter's Sacrificial Knife x3 
Treasure Hoarder Insignia x2 
Luminous Sands from Guyun x3 Phase 2
Level cap: 50
Adventure rank required: 25
Mora: 15,000
Materials
Hunter's Sacrificial Knife x12 Treasure Hoarder Insignia x8 
Lustrous Stone from Guyun x3 Phase 3
Level cap: 60
Adventure rank required: 30
Mora: 20,000
Materials
Agent's Sacrificial Knife x6 
Silver Raven Insignia x6 Lustrous Stone from Guyun x6 Phase 4
Level cap: 70
Adventure rank required: 35
Mora: 30,000
Materials
Agent's Sacrificial Knife x12 Silver Raven Insignia x9 
Relic from Guyun x3 Phase 5
Level cap: 80
Adventure rank required: 40
Mora: 35,000
Materials
Inspector's Sacrificial Knife x9 
Golden Raven Insignia x6 Relic from Guyun x6 Phase 6
Level cap: 90
Adventure rank required: 50
Mora: 45,000
Materials
Inspector's Sacrificial Knife x18 Golden Raven Insignia x12 
Divine Body from Guyun x4