BH6SVA_AC3QU First of all, I didn't find any way to get QH to reimburse me; it was all self-funded, and the cost is definitely a problem.
The potions themselves are not cheap, and there are also requirements for the paper. The overall cost is approximately 5-6 yuan per item, plus an additional 15 minutes of labor per batch (one hour per batch, with existing tools capable of producing 4 sheets at once), so currently we can only produce small batches.