C1069 A Hundred Years of Time

Qing Chen smiled slightly and said, "These words are obviously from an outsider. Although the control of the fire during the refining is very important, don't look at it. When refining, you can use the Primordial Spirit Fire. The higher your cultivation, the lower the requirement for the fire of heaven and earth. On the other hand, the refining materials are the key. Since you know how to refine