After cleaning the materials, Shen Xu put the rabbit skin in his refining furnace, placed the furnace above his spiritual root fire, and began removing impurities from the skin.
This took one day.
After one day, the double wiped his forehead and sighed in exhaustion.
'It's been a while since I had to remove impurities without relying on the space's spiritual water.' He thought and narrowed his eyes with a solemn expression.
It wasn't wrong to rely on the spiritual water.
After all, it was a treasure and failing to use it would be a waste of resources.
However, it wasn't until now that he realised he had been over-relying on it and failing to develop some of his other skills.
'Fortunately, it's not too late to change.' He thought.
With one day gone, the challenge still had two, but Shen Xu was not in a hurry.
Instead of rushing to remove impurities from the auxiliary materials, he sat cross-legged and adjusted his condition while replenishing his qi.
