The remaining feathers, all of which are R-level, are just the most common impure feathers, hundreds and thousands of them, all looking like messy feathers. Ding Hui plans to use them for firewood. The fire burned by this type of material contains special components that can have a certain increase in purification, but the quantity is still a bit lacking and needs to be supplemented with other auxiliary materials to burn for a long enough time.
Each of the three-tier materials has its own uses, broken down, basically all can be utilized.
Fang Yu watched as Ding Hui wiped the sweat from his forehead. He worked all night and had no intention of resting, directly starting to busily work back and forth alone.
If Ding Hui did not genuinely love this kind of work, Fang Yu would have suspected himself of abusing Ding Hui...
