the furnace needed for the cultivator is that the temperature of the cultivator is too high. The cultivator who can bear the flame temperature of the cultivator. And the body refiner uses the flame of the refiner to temper himself. All of them are not afraid of the fire, so they don't need the furnace. At the same time, using body refining tools, the refined treasure is the best in the same level. Because every treasure is not made of one material, such as an iron sword. It is not only made of iron ore, but also of charcoal, gold, tin, etc. the high-level treasure making materials are more complex....