More Soul Power surged out and entered the Medicine Cauldron as Gu He focused with all his strength on sensing the changes among the medicinal ingredients.
Noticing Gu He's actions, Yao Kongzi said nothing. He merely controlled all the refined medicinal essences and began bringing them into contact.
At this most difficult stage of pill refinement, even an Alchemy Grandmaster who had long since made his name, like Yao Kongzi, appeared exceptionally cautious, afraid that a single mistake would lead to failure.
As the medicinal essences came into contact, a vast surge of energy erupted from within the Medicine Cauldron. Fortunately, both men were at least eight-star Dou Zuns, so they paid little mind to this energy, which could injure a Dou Zong, and continued carefully watching the activity within the cauldron.
Under Yao Kongzi's exquisite control of the flames, the medicinal ingredients began to make contact smoothly. The repulsive force at their points of contact continuously diminished under the proper heat.
Over the following days, Yao Kongzi constantly adjusted the temperature of the flames, ensuring that the fusion of the medicinal ingredients within the Medicine Cauldron encountered no problems. They fused at a fairly steady pace.
However, the fusion speed was worrying. Often, only a tiny amount would fuse after several hours. Even so, Gu He did not look away. To outsiders, this would have seemed exceedingly dull, but the countless changes occurring among the ingredients inside the Medicine Cauldron were far from as simple as they appeared from the outside. Those changes drew Gu He's attention continuously as he combined them with his own alchemy knowledge and pondered the meaning behind every shift.
Even Gu He, who was merely observing, did not lose focus, much less Yao Kongzi, a veteran Alchemy Grandmaster. It could be said that every