Elder Xiong looked at the transparent luminous cup in Zheng Fa's hand. The icy crystals on the glass walls sparkled so brightly that he found it difficult to look directly at them.
But Zheng Fa's expression was something even harder to scrutinize.
"Is this the Water Refining method for alchemy?"
Zhao Jingfan leaned over curiously, staring at the luminous cup.
Gazing at the solution within the cup, Zheng Fa spoke cautiously, "I'm not very familiar with Water Refining in alchemy; I'm merely purifying."
The previous experimental process as well.
Whether it was the final potency test.
All pointed to one issue with the pill-making challenge — insufficient purity of the Golden Core.
For purification, there are only a few chemical methods. Looking back at previous experimental records, the first thing Zheng Fa thought of was extraction.
Based on current observations, Zheng Fa had a hypothesis:
Under certain conditions, Frost Leaves could form a solvent.
