Yazhen Syringes are a key consumable in Arknights Endfield used for healing during exploration and combat. Building an automated production line for them in Wuling lets you generate steady income by selling to your outpost while keeping your own supply topped up. The process requires ferrium, yazhen plants, and a few basic machines connected in the right sequence.
Quick answer: Import a community blueprint code into your factory planner, set up yazhen cultivation in a seed picker, connect ferrium refinement and bottling machines, and let the system run on its own.
What You Need to Start
Before building, make sure you have access to ferrium ore in Wuling and have researched hydroponics in the AIC tech tree so your planters can grow yazhen without water. You'll also need a depot bus and at least one outpost size upgrade to handle the resource transfers and sales. If you're just starting out, having a stockpile of ferrium from Valley IV helps smooth the early production phase.
The core machines involved are a seed picker (to grow yazhen from seeds), ferrium refineries (to process ore into refined ferrium), and bottling machines (to turn refined ferrium and yazhen into finished syringes). These connect via belts and pipes in a straightforward chain.
Using a Community Blueprint
The fastest way to get a working setup is to use a shared blueprint code. Open your factory planner, go to the Shared Blueprints tab, select Import Blueprint, and paste one of the available codes. A simple starter layout uses code EFO01o08341I4e6UIieO (NA/EU) and consumes 60 ferrium per minute while producing 3 syringes per minute. This design is straightforward but leaves room for optimization if you want to refine it later.
Alternative codes exist for different production scales and server regions. The key is picking one that fits your current ferrium supply and outpost capacity. Paste the code, place the blueprint in an open area of your Wuling base, and the layout appears ready to configure.
Setting Up Yazhen Cultivation
Once the blueprint is placed, fill every seed picker unit with yazhen seeds. A single planter produces 2 yazhen while a seed picker only produces 1 seed, so you'll need at least two sets of auto-farming to sustain continuous production. If you haven't set up yazhen cultivation yet, plant one planter and one seed picker in a loop—the planter feeds seeds back to itself while the excess yazhen flows to your bottling line.
Make sure water connections are running to your planters if you haven't disabled water usage in the settings. The system works without water if you toggle off the water symbol in each planter, though some players prefer keeping water enabled for consistency.
Connecting Ferrium and Bottling
Route ferrium ore from your mining operations into the refinery machines. The refined ferrium then flows to your bottling machines, which combine it with yazhen to create syringes. Set your output destination to your outpost, so finished syringes automatically transfer for sale or personal use.
Ferrium consumption is the main constraint—the starter blueprint uses 60 per minute, which can deplete local stocks quickly. If you're running low, temporarily reduce production or import additional ferrium from Valley IV through your depot bus. After an hour of steady production, most bases stabilize as they accumulate enough syringes to sell and reinvest the profits.
Optimization and Troubleshooting
The starter blueprint works as-is but isn't perfectly optimized. Common improvements include reducing the number of refinery belts (two refineries can feed into one molding machine instead of running separate lines) and adjusting bottler counts based on your actual ferrium supply. If your production stalls, check that yazhen seeds are reaching the seed picker and that ferrium is flowing steadily into the refineries.
Some blueprint codes may have compatibility issues depending on your game version or server region. If a code doesn't import, try replacing uppercase "i" characters with lowercase "l"—this is a common transcription issue in shared codes. If the layout still won't load, use an alternative code from the community or build a simple version manually by placing machines in sequence.
Once running, a Yazhen Syringe factory becomes one of your most reliable income sources in Wuling. The syringes sell for a steady price at your outpost, and the production loop requires minimal babysitting once ferrium supply is stable. As you expand your base and unlock more mining capacity, you can scale up production or add secondary lines for other consumables.
