Target the exact advanced material needed for a mid-game promotion and avoid wasting Serum on unrelated drops.
PC / Global English
WHERE & HOW TO FARM
Where to farm
Resource > Material, or a mid-game story stage whose reward preview lists the exact Advanced Promotion Material required by the Construct.
Advanced Promotion Materials support later promotion tiers than the basic materials used early on. The material list can vary with the Construct and tier, so there is no universal farm to repeat. Read the upcoming promotion requirement first, then select a matching Resource stage or a story stage whose reward preview explicitly includes the item.
The Construct profile shows an Advanced Promotion Material requirement.
The exact material name and remaining quantity are recorded.
The matching Resource or story stage is unlocked.
Open the Construct profile and inspect the next promotion tier’s item list and level gate.
Write down the exact advanced material and the quantity still needed.
Check Resource > Material stage previews for that specific item.
Check available mid-game story reward previews for the same material, especially if continuing story progression.
Choose a source that actually lists the item and that your team can clear reliably.
Spend Serum until the profile shows the required quantity, then return to the promotion screen.
Complete the promotion if all other gates are met; otherwise identify the next unmet requirement before farming again.
Farming tips
Higher difficulty can provide better quantities or rarer versions, but only choose it if the reward preview matches and you can clear it.
Event shops sometimes list advanced materials; treat them as an option only when current stock names the needed item.
Repeat, collect and use
Repeat the confirmed stage until the count for this promotion is met. Promotion itself is a one-time tier step; later tiers may require another material and need a fresh check.
Common mistakes
Assuming one Advanced material works for every Construct; read the specific profile entry.
Spending Serum on an unverified story stage; confirm the reward preview first.
Farming beyond the required count when a level gate or another item is the real blocker.
When to stop or switch
Stop once the profile has enough material for the planned promotion, then switch to the remaining requirement or promote.
