Long Xuan took a deep breath, took out all the materials, and then put them one by one into a large cauldron.

The number of spirit insects was too large, and the original Gu pot could not hold them at all. Now he could only use the large cauldron.

After putting all the spirit insects into the cauldron and covering the lid, he began to observe the progress.

If he did not see the progress, it meant that the Gu could not be made. Long Xuan took out all the spirit insects and changed the order and played them again.

After repeating this step thirty-seven times, the progress [0%] finally appeared in the large cauldron.

At the same time, all the spirit insects in the cauldron instantly quieted down.

The eye that exuded evil spirit was very strange. All the spirit insects that were stared at by it would be fixed in place, with dull eyes and motionless.

It was like being pulled into a certain illusion by an illusion. The soul was pulled into the illusion, and the body outside could only be eaten by this evil insect bit by bit.

The progress appeared, and Long Xuan breathed a sigh of relief. Finally, he did not work too long.

The success rate of all Gu recipes is different. Some may succeed after two times of refining, while others may fail after ten thousand times of refining.

He was really afraid that this was a Gu recipe with a very low success rate. It would be difficult to deal with so many spiritual insects.

The next step was to wait patiently. Long Xuan was very curious about how powerful the illusion would be with this expensive pupil Gu. The feeling of opening a blind box made him nervous and excited.

The waiting time always felt long. Long Xuan had to check the progress of the big cauldron from time to time, and he was very anxious.

Perhaps the lower the quality of the Gu, the faster it would succeed, and the higher the quality of the Gu, the slower it would succeed.

This Gu actually made him wait for 9981 days, which made him feel like a year.

Because there was a progress reminder, he waited by the side early on the day of the success. When the progress reached 100%, he was shocked and immediately opened the lid of the cauldron. He saw an evil pupil Gu lying in the center of the cauldron, staring at him with extremely strange eyes.

Long Xuan couldn't wait and immediately dripped blood to complete the blood contract with it.

Have you ever eaten pork but have you never seen a pig run? Pupil Gu is a kind of internal Gu. If it is small in size, it will parasitize in the eyes, and if it is large in size, it will parasitize in the center of the eyebrows.

The Long family has a unique Gu recipe called the Evil Dragon Emperor Eye, and Old Long has also personally refined one, so he still has some understanding of how to use the pupil Gu.

This pupil Gu is a bit larger in size, so Long Xuan put it on his forehead.

The pupil Gu lay on his forehead for a moment, and then it broke through the skin according to its instinct and drilled into the center of the eyebrows.

After it drilled into the center of the eyebrows, the skin quickly merged without any gaps. From a distance, you can't see the wound at all, let alone the evil eye buried inside. The concealment is in place.

At the same time, after Long Xuan felt a sharp pain in the center of his eyebrows, his mental power was frantically drawn to the center of his eyebrows, and was frantically sucked by the pupil Gu.

After the pupil gu had eaten and drunk enough, it gave its ability to Long Xuan. Thus, the man and the gu completed a symbiotic relationship, and they both prospered and suffered together.

Not everyone is qualified to refine the pupil gu, and it has extremely high requirements for the spiritual power of the gu cultivator. Those with insufficient spiritual power will be drained of their spiritual power and die at this step.

Although Long Xuan did not know how strong his spiritual power was, he had lived two lives and strong spiritual power was a common advantage of all traversers, so he was completely confident in his spiritual power.

He completed symbiosis with the pupil gu without any discomfort, and he could fully afford to provide the spiritual power of the pupil gu.

At the same time, he also knew what the illusion carried by the pupil gu was.

This illusion is called the original world, which will perfectly copy the scenery in the real world into an illusion.

Everything in the illusion is exactly the same as reality, and people in the illusion cannot see through the illusion by finding differences from the real world.

The absolutely real illusion makes it difficult for the person who is in the illusion to find flaws, but he is in the illusion without knowing it.

This is the power of this illusion.

Long Xuan was so excited that he could not wait to test the basic ability of the pupil.

Driven by his thoughts, an eye quickly opened between his eyebrows, emitting a charming evil spirit.

He closed his eyes tightly and tried to use this eye to see the new world.

As his mental power was injected, the world in front of him began to lengthen and magnify little by little, which was exactly the ability of a microscope.

Long Xuan was ecstatic. He actually succeeded. He actually studied the ability to magnify tiny objects by tinkering around.

He held his breath, took a deep breath, calmed his beating heart, and began to test the limit of the pupil.

He increased his strength to inject mental power again, and the vision in front of him was further enlarged, and soon entered the microscopic level.

At this time, he could already see micron creatures and could already go around the world to look for water bears.

But he was not satisfied with this. He further enlarged and his vision went deeper. He began to see bacteria and viruses floating in the air. At this time, his eyes could already see the nanometer level.

But this was not enough. He injected his mental power crazily, and his vision began to expand a hundred times, a thousand times...

As his vision expanded, all the images he saw were moving rapidly from the center to the surroundings, making him dizzy.

He didn't know how many times it had been magnified. Now he could see molecules, and then he saw atoms and nuclei...

Long Xuan's heart was beating wildly. The reason he wanted to create this ability was just to prevent others from poisoning him, and to catch water bears.

But he didn't expect that this pupil poison was so powerful that it could magnify his vision to the atomic level, and this was not even the limit.

After the spirit insect turns into a Gu worm, its growth rate will be cleaned and start from zero.

Now this pupil Gu is only an infant with a growth rate of 0%. It is so powerful in its infancy. What will it be like when it matures?

Long Xuan dared not imagine it.

The enlargement limit of this pupil Gu far exceeded his expectations. Once it reaches full growth, it may explore a world that is even smaller than the one he knew in his previous life. He can't wait to know what the smaller world is.

Long Xuan began to think about how to use this ability. He can't just enlarge it without any use.

Not long ago, he just knew that the ability of Gu worms can be deeply developed. Gu worms obviously have only one ability, but Gu cultivators can make the ability of Gu worms more complicated and diversified with their own imagination.

Enlarging objects seems to be just one ability, and it is also very inconspicuous and has no lethality.

But Long Xuan is conceited that his imagination is awesome, and he wants to develop several more abilities based on this ability. Even if it is just an auxiliary ability to enlarge objects, he will develop it into a forbidden move.

What can be done by enlarging objects? Long Xuan's brain began to work frantically.

He first opened the pupil Gu to the extreme and scanned the room. Finally, he found that the vision would be slightly perspective when it was magnified to the extreme, but it was limited to very thin and low-density things.

It might not be possible to accurately see what kind of insects are in the fossils. It can only see through a thin layer of the ground and cannot penetrate very deep.

But even at this level, Long Xuan was already very satisfied. Even if it can penetrate deep underground, what does it matter? Without night vision, it is still impossible to see what is underground.

Soon he thought of magnifying other people's elixirs, spiritual insect feed, poisons and other resources, and cracking their formulas through microscopic analysis.

Then he thought that this ability seemed to be able to move in detail.

The so-called moving in detail means avoiding the opponent's attack with the smallest amplitude. It is very practical in actual combat, at least it can save a lot of physical strength.

Isn't it practical in combat?

But this is not enough. The lethality of these brain holes is not terrifying enough. He wants to develop forbidden moves, and develop forbidden moves that are not inferior to light concentration...

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