C7066 Refining the Medicine!

In the path of alchemy, there were only five levels.

For a figure like the Taoist Ancestor, his alchemy level was already unfathomable, and he was at the peak of the pinnacle. He had already reached the level of a fifth grade alchemy saint.

When Lu Yu was in the Heaven Realm, his alchemy level was already quite solid. However, the more he studied, the more he could feel his own deficiencies