At the beginning of July, the beginning of autumn.

Although the Great Heat has just passed, the weather is still hot.

Outside Wuling City, the newly built Four Arts Academy is very lively.

The Four Arts Academy was named Qishi Mansion by the Prince of Wuling. Unlike the open county schools and other official schools, it never recruits students, which is extremely mysterious.

The Qishi Mansion is built against the mountain, covering an area of ​​dozens of hectares, with countless pavilions, towers, and large halls and gardens.

The mountains of Xuefu are planted with all kinds of trees and flowers, pomegranates and red flowers bloom all over the mountains and fields, and are full of red flowers.

The transplanted lotus flowers bloom in the pond, and the white and pink petals are crystal clear in the sun, dancing gently with a gust of wind.

School, Danyuan.

"Success!"

In the elixir room, Li Yu used a jade bottle to collect the spiritual liquid in the elixir furnace.

These spiritual liquids were refined by him using spiritual springs and some spiritual medicines, which can improve the physical strength of martial arts practitioners and improve their cultivation.

"The spiritual liquid has been refined, but the effect needs to be verified by someone."

Li Yu left a bottle of spiritual liquid, put away the remaining jade bottle, and walked out the door.

Since the expansion of the army, his power has increased significantly, and it has also brought new problems.

That is, the strength of the army soldiers has improved too slowly.

It has been a month since the expansion of the army, and only Tiance, Xuanhuang, Cangyun, and Shenwei all entered the acquired realm.

Only half of the remaining Jinyiwei, Chi Xiao, and Dongting Navy became acquired martial artists.

There are many reasons for this situation, such as: soldier qualifications, cultivation resources, etc.

Li Yu has no good idea about qualifications.

Although he has some elixirs that can improve his qualifications, he will not spend less resources no matter which one.

If only a small number of people, then he will not be stingy with the little dead.

But the target is tens of thousands of people, and even if he is killed, he will not be able to produce so many pills.

He can't do much, he can only select some people to focus on training.

If the qualifications are not good, then Li Yu can only start with resources.

This is easy to deal with. The world changes greatly, and animals and plants are changing every day, so you don’t have any resources.

It is difficult to achieve these resources to the maximum effect.

Li Yu thought about it at home for a long time and prepared several choices.

Finally, I chose to refine spiritual liquid.

As soon as he walked out of the Dan room, three people came outside.

It is Tieshan and Xuanwei Taoist.

"Congratulations to the king for coming out of seclusion!"

The two of them saluted, and then their eyes were attracted by the jade bottle in Li Yu's hand.

"Your Majesty, is this what you are talking about spiritual liquid?"

Xuan Wei moved her eyes away, looked at Li Yu next to her, and asked.

"good!"

Li Yu nodded and said with a smile: "This bottle is spiritual liquid, which can enhance the body of martial arts cultivators and improve their cultivation."

"But the specific effect needs to be verified by someone."

Tieshan heard this, his eyes lit up slightly, and he immediately bowed and said, "Master, I will be willing to give it a try."

Li Yu shook his head and chuckled, "You can't do it. Your cultivation is too high. This spiritual liquid is only suitable for people below the innate level. The lower the cultivation level, the more obvious the effect after taking it."

He looked at Xuanwei opposite him, and saw that the other party was eager to try, and he thought for a moment and still felt a basin of cold water.

"Master Xuanwei, you are already in the late stage of the ninth level of acquired nature. The effect after taking spiritual liquid is not great and cannot provide reference. Let's give the opportunity to others."

Upon hearing this, Xuan Wei showed regret without any concealment on her face and did not continue to persevere.

Li Yu attracted the surrounding Jinyiwei, picked up the jade bottle in his hand, and said with a serious expression: "The jade bottle in Gu's hand contains a kind of spiritual liquid, which can improve the physical strength of martial arts cultivators and improve their cultivation. I asked you to come here to try the medicine."

"But Gu Youyan was first, no one took this medicine yet, and the specific effect was still unknown. If you want to test the medicine, you need to be mentally prepared."

The method of refining spiritual liquid was thought about by himself, but he did not go through systematic deductions, so it was difficult for him to explain whether there was any risk.

When the Jinyiwei in front of him heard this, his eyes changed slightly, but none of them wavered, and he still looked forward with his head held high and his chest raised.

However, even though they were calm, some expression changes and minor movements still couldn't escape Li Yu's eyes.

He saw that everyone was a little nervous and suddenly chuckled, "You don't have to worry too much. If you are alone, you won't have any worries about your life."

With Li Yu's words, everyone's expressions were indeed much more relaxed.

Seeing this, Li Yu nodded slightly in his heart, then waved his sleeves, and ten bottles of spiritual liquid floated in the air in front of him.

"Those who are willing to test the medicine take a step forward!"

Thirty Jinyiwei took a step forward together.

Li Yu frowned slightly and finally selected ten people himself.

He divided the ten people into two groups, one group took them normally, and the other group took them after practicing martial arts.

After everyone took the spiritual liquid, one group sat in meditation normally; the other group meditated and practiced.

After the arrangement was completed, Li Yu took Tieshan to sit down and rest not far away.

As for Xuanwei, he took a notebook and walked back and forth between ten people, carefully observing the changes of everyone.

The waiting process is boring, but Li Yu has long been used to it and does not feel bored.

About half an hour later, someone in the second group changed first.

In the next hour, everyone said that their bodies had changed.

Li Yu asked someone to write down what each person felt, and then took them to the school ground to start testing their strength and health.

After another hour of hard work, Li Yu asked ten people to go down to rest, and sent someone to observe it specifically, and once an abnormality was found, it was reported in time.

"Your Majesty, after comparison, after taking spiritual liquid after practicing martial arts, the most obvious effect of meditation and practice."

Xuanwei came to Li Yu with the notes, with an excited expression on his face and a rather excited tone.

He was happy not only about the success of the spiritual liquid, but also about the experimental comparison method that Li Yu had proposed.

This method seems simple, but it is very practical and applicable.

Li Yu took the experimental record from the other party, looked at it for a moment, nodded and said in a deep voice: "Let me find another group of people tomorrow and take the second test of the medicine."

When Xuan Wei heard this, he looked puzzled and said, "Isn't the effectiveness successful? Why do you need to test it again?"

In his opinion, no one died of discomfort when taking the medicine this time, and the best results were obtained.

This chapter is not finished yet, please click on the next page to continue reading the exciting content behind! The next step is naturally to refine it in large quantities and then promote it to the army.

Why do you still need to test the medicine?

"The spiritual liquid is indeed successful, but the number of medicines tested is too few, so there are not many comparisons. This will have a certain impact on the promotion and use of spiritual liquid..."

Since Li Yu had taken the experimental comparison, he naturally wanted to promote it, so he patiently explained to Xuanwei.

For example: How to produce the maximum effect of spiritual liquid, and whether it can be taken with other pills?

There are also examples: whether people with illness can take spiritual fluids; the effect of taking spiritual fluids in the early stage, mid-stage, and later stages, etc.

The more Xuan Wei listened, the more serious his eyebrows became, and at the same time he kept recording what Li Yu said.

Seeing this, the latter said that he would organize a comprehensive experimental comparison method and hand it over to the other party.

The next day, when Li Yu came to Qishi Mansion again, there were more Lao Ou, Jiang Tu, Lu Xuan and others beside Xuanwei.

They all heard about experimental comparisons from Xuanwei and came to learn.

After hearing this, Li Yu asked everyone to stay and then arranged a new experimental comparison.

After three days, the final test results of the spiritual liquid were released.

Under normal use, you do not need to practice martial arts warm-up before taking spiritual liquid, but you need to meditate and practice after taking it, which is the best effect.

Take a bottle of spiritual liquid in the early stage of the day after tomorrow. Under normal circumstances, you can improve your cultivation level by one level.

In the middle of the acquired day, under normal circumstances, three bottles need to be lifted one level.

In the late stage of the acquired day, under normal circumstances, ten bottles are required to lift the first level.

There is no standard for spiritual liquid to improve the body.

Each person has different qualifications and different improvement effects, so it is difficult to get a standard.

After the test of the spiritual liquid is completed, the next step is to refine it in large quantities.
To be continued...