"Swish!"
As he waved his hands, about three hundred kinds of materials steadily flew into the crafting furnace.
He then placed both hands on the two air vents and pushed his Dark Force into the furnace.
The Dark Force instantly turned into furious flames that kept calcining the materials.
Su Mo was highly concentrated and dared not to have the slightest distraction.
He had already gone over the steps countless times, and he knew every detail of crafting a Natal Spiritual Sword.
Therefore, if he made no mistake and completely stick to the crafting method, he could make it.
The Natal Spiritual Sword had no classes or levels like the other weapons. Therefore, it did not take a high-level craftsman to craft it. A King craftsman was already qualified to craft it.