C559 Soul-Spirit Furnace

What is a spirit soul furnace? It was a cauldron that was formed from his own soul force and spiritual power, called the Spiritual Stove.

However, not just anyone could condense a spirit furnace so easily, because he had very strict requirements.

Firstly, you have to possess a Profound Ranked Soul Stage, and secondly, you need to possess an incomparably enormous spiritual power