Soon, the refining process reached the point where there was only a wisp of black left in the liquid medicine. This time, Lin Yiran grasped the timing of investing in the willow vine very well.

When the willow vine is put into the medicine pod, the liquid medicine becomes semi-solid, and at the same time, it also changes from a transparent color to a pale green. Smelling the fresh smell of medicine coming from the medicine tripod, Lin Yiran felt a little relieved, but he still didn't dare to relax a little, because it was still very early before the refining was successful.

As time passed, the liquid gradually decreased, and its form changed towards a solid state.

Lin Yiran was engrossed in controlling the fire, every time the liquid medicine shrank by one point, the temperature of the flame increased by one point, and when the liquid in the medicine tripod was only half the size of a fist, he didn't dare to come out—because the time to add the Xuanying Claw was about to come.

Lin Yiran made a slight move with his left hand and held the Xuanying Claw tightly in his hand, because before adding the Xuanying Claw to the medicinal liquid, he had to pinch the Xuanying Claw into powder.

And this step cannot be prepared in advance, because once the Eagle Claw becomes powder, it will easily deteriorate, and the spoiled Eagle Claw will either lead to the failure of refining or greatly reduce the effectiveness of the medicine when it is added to the medicinal solution.

Time passed slowly, and the liquid was still gradually decreasing, and the form was still gradually changing to a solid state.

According to his previous experience in alchemy, when the last bubble in the medicinal liquid disappeared, it was a sign that the medicinal liquid had completely become solid. However, the difficulty lies in how to tell which bubble is the last one, which requires several more refining to know.

At this time, Lin Yiran was not so anxious, he let go of the Eagle Claw, planning to observe when the last bubble would appear this time, and try to add the Eagle Claw next time.

He didn't think it was a waste to do this, but it was a waste to be too anxious. He felt that if he used this refining as an experiment, he would reduce the time to find out the tricks later.

Lin Yiran stared intently at the potion while guessing in his heart when the last bubble would appear.

"That's it. Just as a bubble of inhaled hair was formed, he thought this should be the last bubble.

He waited silently for the bubble to disappear, trying to determine if this was the last one.

But to Lin Yiran's surprise, when this bubble was about to disappear, it split into two bubbles.

It gave him a bit of a headache - he didn't know if the two bubbles would eventually disappear together, or if they would disappear one by one, because he hadn't encountered such a situation before.

However, he was not in a hurry, after all, his refining of the Strong Spirit Pill was just a preparation for refining the Gathering Form Pill, and successfully refining the Strong Spirit Pill was not his ultimate goal, so he could take this as an opportunity to accumulate experience.

It didn't take long for the two bubbles to disappear almost simultaneously, and no new bubbles appeared in the body. At the same time, the body of the pill was also completely solidified into a pill, but it seemed that because of the fact that the Xuanying Claw was not added, the color on the surface of the pill was very dull, and it seemed that there was no trace of medicinal effect.

After cleaning up the pills, Lin Yiran began a new round of refining process.

After going through the same steps as before, he succeeded in refining the potion to the point where it was only half the size of a fist. This time, he still planned to determine the timing of joining the Eagle Claw by observing the bubbles.

Soon, it was time for what he thought was the penultimate bubble to appear—because it was the size of the penultimate last time.

At the same time, Lin Yiran tightly grasped the Xuanying Claw that he had held in his hand for a long time, waiting for this bubble to disappear or split.

This time, the bubble split into two, but when it split into two, one of them disappeared, leaving only one bubble in the body.

Lin Yiran didn't feel any surprise at this, because he had already expected that there was no fixed law to follow in the alchemy process, and if there was a fixed law to follow, then all the prescriptions would definitely be recorded in detail.

At this time, Lin Yiran's spirit was highly concentrated, and even if someone came to attack him at this time, I am afraid he would not find out.

Slowly, the bubble on the body of the medicine began to move outside the body of the medicine, and Lin Yiran held the Xuanying claw in his hand hard, pinched it into a ball of powder, and then threw it into the medicine pod.

This time, he knew that the strong spirit pill must have been successfully refined, because he found that after this bubble disappeared, no new bubbles were generated.

Almost at the same time as the bubbles disappeared, the body of the medicine took on the appearance of an elixir, and the powder of the Eagle Claw also touched the surface of the body. As the powder continued to merge into the body of the elixir, the surface of the elixir began to emit a faint purple glow.

It wasn't until all the powder was integrated into the body of the medicine that the pill was finally formed, and then suspended at the mouth of the pill, emitting a somewhat dazzling purple light and a strong aroma of the pill.

Lin Yiran held the elixir in the palm of his hand, carefully observed the elixir, and after a long time, he was sure that this strong elixir belonged to the top grade.

He carefully put the elixir into an empty jade bottle, thinking that refining this high-grade strong elixir at least did not waste these four medicinal materials, because he knew that this strong elixir could sell at least seven or eight raw materials, after all, it was not easy to refine a high-grade strong elixir.

With this top-grade strong elixir, Lin Yiran could finally waste these raw materials unscrupulously, he felt that no matter how unlucky he was, it was impossible for these six raw materials to fail to refine a strong elixir. Even if he only refines a low-grade strong spirit pill, he can guarantee that he will not lose money in refining the medicine this time.

Lin Yiran gently wiped the beads of sweat from his forehead with his sleeve, he felt that refining the pill was really too painstaking. He guessed that if he could use his perception to refine the elixir, he might not bother so much. After all, through his perception, he could clearly feel the slightest change in the liquid medicine, and he no longer needed to determine the time to put in the main material by observing it with the naked eye.

However, he knew very well that with his current perception strength, it was not enough to sense the changes in the liquid of the elixir of the level of the strong elixir, maybe only after he studied with Wu Huaqing for a period of time and raised his perception to a new level, he could use his perception to refine the elixir.

It's just that before that, he still needs to use the naked eye to observe this stupid method to refine the Gathering Pill.

After resting for a while, Lin Yiran started a new round of refining.

In the next six refining the strong spirit pills, he only succeeded in refining two strong spirit pills, two of which were medium-grade and one was low-grade.

With such a success rate and quality, Lin Yiran will naturally not be satisfied.