() Liu Tian went down the mountain and came to the ice lake, where he met Lu Tong.

Taking Lutong with him, he went down the mountain to see Su Yutong. When he saw that she was fine, Liu Tian felt relieved.

On the same day, Liu Tian returned to the sect and told Lu Tong that he had to work hard to refine medicine in the recent period, and he might not have time to come to Binghu again.

Lu Tong was a well-educated girl. Although she was reluctant, she did not make a fuss, but chose to silently support Liu Tian.

In fact, Lu Tong didn't know the reason why Liu Tian worked so hard and practiced medicine so hard!

This is because Liu Tian saw a kind of elixir called 'Shu Jing Dan' in the art of alchemy. It can clear a person's blocked meridians, restore the meridians to normal, and make people with blocked meridians completely become normal people.

Shujing Dan, if you want to refine it, you need to reach a very high level of alchemy skills.

Not only that, Shu Jing Dan also requires a lot of auxiliary materials, not only more than a dozen rare medicinal materials, but also the inner elixir of high-level monsters.

Many medicinal materials are not necessarily of high grade, but they are very scarce and rarely available. For example, Liu Tian once saw the Xiyanhua in medical practice. This is a first-grade medicinal material, but its preciousness is comparable to that of a precious second-grade medicinal material!

High-level monster inner elixirs are even more scarce.

Ordinary innate monsters cannot form inner elixirs at all. It is said that only monsters that have reached the foundation building stage can form inner elixirs, and they also need high-level ones. It is extremely difficult to obtain such a treasure!

Despite the difficulty, Liu Tian still had to do it because his Lutong meridian was blocked!

Lutong is seventeen years old this year. If there is no way to cure her, even with the assistance of Binghu Lake, it would be a miracle to live for another three or four years.

Previously, Liu Tian had nothing to do about Lu Tong's injury, so he could only try his best to find a way to make Lu Tong happy every day.

After obtaining the alchemy, Liu Tian saw hope!

However, reality does not leave him much time!

Therefore, Liu Tian must seize every opportunity and work hard to refine the medicine!

Looking at the pool of black impurities in the incense burner, another experiment and another failure.

Liu Tian poured out the impurities and cleaned the incense burner. Without any hesitation, he prepared to do it again.

Checking the number of medicinal materials in the storage ring, there are still seven first-grade medicinal materials, three second-grade medicinal materials and one third-grade medicinal material left.

If we continue testing these medicinal materials, we hope to be able to refine an elixir.

Liu Tian was not sure whether he could successfully refine the elixir, so he could only test it again and again, because these tests made him feel that he was getting closer and closer to success.

Finally, when Liu Tian was refining for the fourth time, he followed the instructions on the alchemy technique and fused two medicinal materials with different properties. The black medicinal material and the sky blue medicinal material were mixed together, and finally a new medicine was fused.

liquid.

This liquid appears dark blue, and as it continues to merge together, the quantity of the two liquids also decreases a lot.

The fusion process is complete!

Next is the last step, condensation.

The process of refining elixirs is mainly divided into three steps: purification, fusion, and condensation.

The first step of purification is relatively simple and a careful and meticulous process;

The second step of fusion is a lot more difficult. If you want to fuse medicinal materials with different attributes together, you need to master the proportions of different attributes of the medicinal materials. Once you don't grasp it well, you will lose the practice;

The third step is to condense the elixir. As long as this step is completed, the elixir can be made.

Seeing that the liquid in the incense burner was gradually decreasing under the influence of real fire, and was about to gather momentum, Liu Tian's movements with his hands became more cautious.

At this moment, if you are not careful, this elixir will not be refined.

"Condensing Pill!"

As time goes by, Liu Tian has been controlling the size of the flame, that is, grasping the temperature of the fire.

When he saw that the liquid had almost completely disappeared, he immediately chose to condense the pill.

The movement of his hand began to flip, and the incense burner also started to move. It was not only tempered by fire, but also needed to be assisted by shaking the incense burner.

After a while, Liu Tian, ​​who was sweating profusely, finally stopped.

When I opened the incense burner, I saw a black pill lying quietly inside, and a strong and slightly pungent medicinal fragrance came out.

"Ahem." Liu Tian choked when he smelled it.

Taking out the pill and observing its texture, Liu Tian shook his head slightly.

This time it failed!

If the refining is successful, this Spirit Gathering Pill should be a dark blue pill.

And this is a black pill, which is obviously different from the pills in the records.

Liu Tian gently opened the skin of the medicine a little, put it into his mouth, and tested the medicine on himself.

There was a bitter taste in the medicine's mouth. Liu Tian resisted the urge to spit it out and tasted it carefully to understand what was missing from the elixir and which medicinal materials were excessive.

"This elixir has been refined to waste." Liu Tian placed the refining elixir in a corner of the storage ring.

Although the pills that failed to congeal can't be taken, their potency has not been lost, unlike those waste medicine residues.

If you have the opportunity in the future, you can reheat these elixirs and refine them again.

Liu Tian did this because he had too few medicinal materials and could not waste any of them.

There were so many medicinal materials needed to refine the medicine. Liu Tian found that he couldn't afford it if this continued. He had to find a way to make some money and get more medicinal materials.

Although he failed, he still gained some experience, and Liu Tian was quite pleased.

After all, refining medicine is not something that can be accomplished overnight, it requires continuous accumulation.

Because of his previous experience, Liu Tian decided to try again.

Now there was only one first-grade medicinal plant, so Liu Tian had to combine it with the second-grade medicinal plant. He tried it and found that it didn't work at all!

Two different grades of medicinal materials have different medicinal potencies, and new proportions will be produced during the fusion process. He has not even completed the fusion step! Past experience can only be used as a reference, but he is no longer adaptable.

Seeing that the two medicinal plants were exhausted, Liu Tian felt a heartache in his heart.

He currently has two second-grade medicinal plants and one third-grade medicinal plant.

Because of the catalysis of the alchemy furnace, even ordinary first-grade medicinal materials are actually as powerful as third-grade medicinal materials, and the two second-grade medicinal materials in front of them are even more powerful than fourth-grade medicinal materials!

Fortunately, Liu Tian had previously figured out the shortcomings of the incense burner's catalysis, and had already catalyzed the medicinal materials he had obtained one by one. Now all the medicinal materials are thousands of years old.

Liu Tian held two second-grade medicinal plants and gritted his teeth: "Try again."

The incense burner was cleaned, and two second-grade medicinal herbs were put into the incense burner for purification. Liu Tian did every step very carefully.

These are two medicinal herbs that can be compared to the fourth grade!

Once it fails, Liu Tian's losses will be too great.

After the purification was completed, Liu Tian took a good rest and turned on the Xiantian True Fire again for the second step of fusion!

Liu Tian carefully controlled the real fire. If he felt that the melting speed was slow, he would add a little more innate real fire. If it was too fast, he would immediately weaken the innate real fire.

During the integration process, every subtle change needs to be noticed.

The medicinal power of these two second-grade medicinal materials is stronger than that of first-grade medicinal materials, so it is more laborious to control than before. The temperature of the released flame also needs to be slightly higher, but not too high.

The fusion process was quite smooth. Liu Tian did not dare to relax at all. He struck while the iron was hot and then moved on to the third step: condensing the pill!

"Fire." Liu Tian withdrew all the flames, increased them little by little, and controlled the heat of the entire refining medicine!

In this third step of condensing the elixir, the most critical thing is the word "heat".

Only when you find the best time to condense it into elixir will your success rate be high.

"It's done." Liu Tian looked nervous and his eyes were sharp, watching any subtle changes in the elixir in the incense burner.

When the elixir is condensed and formed, the innate fire disappears, and a fresh fragrance of the medicine comes to the nostrils. After smelling it, people feel refreshed.
Chapter completed!