Concubine Hantian hesitated for a moment, and said in a low voice: "This alchemy was refined by an alchemist under this disciple. If there are enough spiritual materials, there will be a steady stream of them!"

"Oh? Among your subordinates, there is an alchemist who can refine this kind of elixir that has been lost for tens of thousands of years. Do you know his origin?"

Fang Shengnan was slightly startled.