Although he had already expected the difficulty, when he really started, Gu Fenghua knew that the difficulty was far greater than he imagined, but in an instant, the liquid medicine in the furnace boiled, and the huge medicinal power repelled each other, just like a red-hot rock suddenly poured a basin of ice water, bursting violently, and the entire Dan furnace also trembled violently.

Fortunately, this Dan furnace refining is of exquisite quality, and it has the spirit of an artifact, otherwise it would have been blown to pieces by this huge force.

Where did Gu Fenghua dare to be careless, and desperately made one handprint after another. The Dan Fire swayed and changed rapidly, and above the Dan Furnace, the Dao runes also flashed with golden light, like golden ribbons, rotating up and down around the Dan Furnace.

Finally, the Dan furnace gradually calmed down, and the bursts were more intense, but so pure that the medicinal fragrance seemed to have no impurities.

Lu Fangyuan let out a long sigh of relief, only to realize that a layer of fine sweat had floated on his forehead.

When the Dan furnace trembled just now, he was really startled, remembering that at the beginning of the Wuji Holy Heaven, he had asked a total of fifteen Saint Dan masters to help refine the Dao Kaiyan Pill, three of them failed in the step of fusing medicinal herbs, and eleven of them also fell short in the step of fusing medicinal power, he originally thought that Gu Fenghua would also follow in their footsteps and lose in this step, fortunately, Gu Fenghua did not disappoint him, and finally succeeded in fusing medicinal power.

Gu Fenghua himself breathed a sigh of relief and wiped a cold sweat. Although the grade of these herbs is not high, when the medicinal power of that kind of medicine converges and provokes each other, the power that erupts under each other's power is far more than her own medicinal power, if she really blows up the furnace just now, I am afraid that even she will be unable to bear it.

Gu Fenghua also knew that even if the herbs of ordinary grade were fused together, they could produce such terrifying medicinal power, which was definitely not as simple as one plus one equaling two, but catalyzing each other, and the power was ten times and a hundred times, or even a thousand times higher. Her understanding of the way of alchemy is also deeper.

In the Dan furnace, the liquid medicine was still flowing slowly, forming a vortex. The next step should be Yudan, which is also the last step, but also the most important and dangerous step. Gu Fenghua calmed down and fought again.

With one handprint after another, the Dan Fire flickered again, and the runes flickered alternately. In the Dan furnace, with the vortex as the center, the medicinal juice began to condense.

Gu Fenghua's expression became more solemn.

Although the different medicinal powers in the medicinal juice have been balanced and coexisted and calm has been restored, in the process of condensing into a pill, these medicinal powers will also be highly condensed, further blended with water and milk, and finally transformed into a pill power.

This process is too delicate, and any small accident will cause the balance of medicine to be broken, which will lead to the fryer.

And once the highly condensed medicinal power exploded, the power was even more than a hundred times greater than before. Not to mention her with that kind of power, even this demon wood tripod that has been promoted to an artifact may not be able to withstand it.

Her movements were much slower than before, and each handprint was full of divine thoughts. I don't know when, her forehead was already watery, and sweat rolled down her cheeks.

Lorne's hearts were hanging, it was not the first time they had seen Gu Fenghua alchemy, but it was the first time they had seen her so dignified.

They also finally realized that even for Gu Fenghua, this Dao Kaiyan Pill was by no means so easy to refine.

Although they are not good at alchemy, they also have some understanding of it, and they know that when it comes to the knot, it is the most critical step, and it is also the most dangerous step.

From the sweat rolling down Gu Fenghua's face, they could guess how powerful the condensed medicinal power was at this time, once the furnace was fried, the consequences would definitely be unimaginable.