I have a forging furnace.

After traveling through the world of immortal cultivation, a refining furnace appeared in Lin Yu's mind.
It can refine all things in the world.
Refine the Green Copper Tree and obtain Copper Bones.
Refine spiritual stones and gain pure cultivation.
Refining the Water Element Spear grants you the talent of being close to water, which can enhance your ability when practicing water-attributed techniques, and slightly reduce the damage of water-attributed techniques.
Refining the corpses of the top sects' geniuses, you will get pure blood, a large amount of pure cultivation, holy body fragments, and the essence of the sun...
From then on, Lin Yu embarked on the road of refining heaven, earth and genius.