C728 Perseverance

Besides, the consumption of zhenqi is a small matter. More importantly, the old Daoist had told Qiu Yun from the beginning that the medicinal effect of the Divine Dragon Pill was very powerful, and the difficulty of refining it was also very high.

Currently, the refinement of the medicinal ingredients that Qiu Yun had refined was only the simplest step.

Even the simplest step was so difficult