Right now, only the most crucial main material, the [High-Tier Spirit Beast Gastric Bag], is missing.
But this is the key item, because the [Myriad Filth Returning Origin Bag] needs to fuse various toxic gases and be resilient enough, so the best material is naturally the gastric bag of a high-tier spirit beast.
However, this item is extremely hard to find in the Hundred Ghosts Melting Furnace, after all, the ghost bodies here are strange and diverse, and there are basically no organs with similar functions to a gastric bag.
But since Chu Xiu decided to refine this item, he naturally would not overlook the issue of the main material. There are many substitutes for the [Myriad Filth Returning Origin Bag], as long as they serve a similar function.
Chu Xiu is still selecting now, but he just wants to refine a product of higher quality as much as possible.
