```
A few days later, Peter Brown's body had absorbed a large amount of energy, and the Spiritual Realm's energy now completely filled his Elixir Sea.
"It's still far from enough!"
Considering the energy gap required to reach the new level, Peter could only stand up. If he kept soaking in medicinal liquid like this, he figured the time needed would still be too much, as the effect of the medicinal liquid on him was already diminishing.
After taking out Basic Refining, Peter started to read it carefully.
It turned out that different materials require different energy for refining artifacts, so the technique must change accordingly!
Peter then realized the biggest factor was the fire used in the process. To become a true Alchemist in the Immortal Realm, one must first harness a kind of Immortal Fire, which is rare and elusive. Immortal Fire was available in the market, but of a very low level.
After all this trouble, he still needed to find Immortal Fire to integrate!
