The fusiform sensory vortex swirled in Chen's body, and it was now almost twice as large as it had been when it was first formed.

This is the thirty-third time Chen Dui has experimented with the perception in his body. His experimental procedures are very detailed. At different rotational speeds, he made extremely detailed and polar explorations of the characteristics of the fusiform perceptual vortex.

Judging from the results so far, the rotational speed of the fusiform sensory vortex in his body was divided into three phases by him. The low-speed stage, the medium-speed stage and the high-speed stage, and each stage is subdivided into five layers.

What he was experimenting with now was the fifth layer of the high-speed stage, and at this speed, almost all of the perceptual filaments were mobilized, and hundreds of thousands of perceptual filaments shot out of his body and radiated into the surrounding air. Affected, his six senses became sharper than ever.

These perceptual filaments stretched to 4.9 meters and then stopped. This is also the farthest distance that his perception can extend now, and he has not been able to break through five meters. These invisible perceptual filaments floated around his body, like tiny tentacles, they were extremely sensitive, and they could catch the slightest perceptual fluctuations in the distance.

This is already the limit speed he can control. According to the results of his current experiments, the faster the spinning speed of the fusiform sensory vortex, the more perceptual filaments are ejected.

If you continue to increase your speed, what will happen? He was a little hesitant, he didn't know if there would be any adverse reactions. If you speed up again, it will be beyond his control.

He denied that it was his own adventurous thought, and instead urged the vortex of fusiform perception to gradually slow down.

The problem that the perceptual filament could not continue to extend after reaching 4.9 meters had been bothering him. He has not yet found a factor that determines the length of the perceptual filament. The rotational speed of the fusiform sensing vortex determines the number of perceptual filaments ejected, and the faster the velocity, the greater the number of perceptual filaments ejected. On the contrary, the less.

However, what is the effect on the length of perceptual filament extension?

Unconsciously, the rotation speed of the fusiform sensory vortex slowed down, and soon, it approached the low-speed level. This is the slowest speed at which a fusiform perceptual vortex rotates in a spontaneous state. Under normal conditions, it will maintain this rotational speed.

Suddenly, Chen Du consciously ignored a very important question. I've been speeding up the fusiform sensory vortex, but I've not thought of slowing it down at all.

Deceleration, what happens to the fusiform sensory vortex? Chen Du was a little curious.

The fusiform perceptual vortex quickly returned to its usual rotational speed, and Chen Duan began to control its rotation in reverse. Sure enough, Chen Du was secretly happy in his heart, and its speed gradually slowed down.

Chen Du didn't dare to be careless, and realized every bit of change in the vortex of fusiform perception.

The speed was getting slower and slower, and the perceptual filaments that were emitted were rapidly decreasing, and in a short period of time, there were only about a hundred or so sporadic perceptual filaments left around Chen Dui's body. Twilight tried to control one of them, wanting to see what had changed.

He soon came to the conclusion that as the perceptual filaments decreased, so did his control over them.

He tried to move the perceptual filament forward, and at this length, the perceptual filament had reached its limit. The fusiform perceptual vortex gives it a strong inward pull, preventing it from extending further.

This time, however, the perceptual filament moved! It stretched forward rapidly, and Chen Dui didn't feel the pull that had existed.

Chen Du was stunned for a moment, and was stunned for a moment.

The uncontrollable fusiform perceptual vortex suddenly returned to its original speed, and the familiar pulling force suddenly reappeared, and the perceptual filament retracted back to 4.9 meters.

Chen Dui, who came back to his senses, had an unconcealable ecstasy on his face. He was sure that at that moment just now, that perceptual filament had definitely broken through five meters!

It took him ten minutes to regain his composure. Suppressing his excitement, he tried to keep himself calm. He began to carefully control the spindle perception vortex to slow down, and then, the exact same situation reappeared.

Five meters! His perceptual range has finally broken through five meters! He finally met the requirements on the mystery card. It's been a long time since he made twelve cards for the simple water world.

Instead of relaxing, he continued to experiment.

Soon, he found a pattern. The slower the spinning speed of the fusiform sensory vortex, the fewer perceptual filaments can be released, but the length of these perceptual filaments can also be greatly increased. Moreover, Chen Duan also found that not only in terms of the length of extension, but also in the control of other aspects of these perceptual filaments, he was also more handy.

However, it is also dangerous to blindly slow down the speed of the fusiform sensory vortex. As the velocity gradually decreases to a certain critical value, the fusiform perceptual vortex begins to show signs of instability. Chen Du speculated that if he continued to reduce his speed, the fusiform sensory vortex would most likely collapse.

And Chen Du also came up with a new data, the maximum length that his perceptual thin line can extend is 6.2 meters, which is far beyond the five meters required in the simple water world.

So it's that simple! Chen Du smiled bitterly, he had been trapped at this point for so long, but he just didn't think of it.

It was as if his understanding of perception had suddenly risen to a higher level, and his control over perception was more at ease. The fusiform sensory vortex in the body also changed again, and its initial velocity disappeared, but continued to fluctuate with the change in Chen Dui's control.

Chen Du controlled its rotation speed more freely, but every time he approached the two thresholds of high and low, he was alarmed. It seems that the improvement in perception has also made his intuition sharper.

Breaking through five meters means that he can trigger the next level of the mystery card. He didn't know what kind of surprise the mystery card would bring to him? He couldn't help but look forward to it.

It's just that he hasn't been evaluated professionally, and he doesn't know where his perception has become.

Take out the mystery card, tear off the camouflage film on it, and insert it into the meter on your wrist. Once again, he entered the familiar world of simple water.

Without hesitation, he reduced the speed of the fusiform perceptual vortex to the lowest point. Dozens of six-point-and-two-meter perceptual filaments were scattered around his body.

"Congratulations, perception has broken through five meters." The old and calm voice sounded in Chen Du's ears again.

"The Swordfish Challenge hasn't been completed yet, is it going to be a round?" The second sentence was a little silly, and at this time, it also reminded itself that the swordfish challenge was not yet complete. Is the Swordfish Challenge important? Or is there no Swordfish challenge once you get to the next round?

He hesitated.

Is it going to be the next round? Isn't it just to see what the next round is? And now, the opportunity was in front of him, but it gave him an unexpected reminder. However, if you choose no, will there be some irreversible changes?

He didn't dare to be careless in every word of this old voice, even every word in it. This is the most important and intuitive clue that this mystery card gives itself. Only by carefully analyzing the meaning contained in these words can he make a more accurate choice that is more favorable to himself.

After thinking about it for more than ten minutes, he decided to choose no.

What made him breathe a sigh of relief was that except for the old voice that disappeared, the simple water world was still the same as usual, without any difference.

After withdrawing from the simple water world, Chen Du felt a little afraid, if an irreversible change had happened just now, he didn't know how much he would regret it. But thankfully, this time I was lucky, and I made the right bet!

Next, it's all you have left for the Swordfish Challenge! Chen Dui's spirits were high, and his whole body seemed to be full of strength.

He put all the work at hand down for a while, except for the thunderous fitness and perception exercises, the rest of the time, he spent the rest of his time on the swordfish challenge. Fortunately, he had a Swordfish training card, otherwise, he would have been seriously injured dozens of times by now. The sharp pain like pins and needles is still fresh in his memory.

Every day, he kept running in the swordfish training, dodging and dodging, and Chen Dui made rapid progress. However, what he didn't expect was that it was perception that played a key role!

The longer the perceptual filament, the farther the fluctuation can be felt, and the more perceptual filaments there are, the more sensitive oneself will be to the changes around oneself.

The second point, in particular, is too important for him! While keeping the fusiform sensory vortex spinning at high speed, he was able to feel any subtle changes in the flow of water around him. And in normal times, although it can be felt, it is far less clear than in this case.

The only question now is how to maintain stable control of perception while running and dodging.

Could it be that there is a certain connection between these trainings in the simple water world? Sometimes, Chen Du would occasionally come up with this idea.

As long as the goal and method are found, it is not a very difficult problem for Chen Du. He has enough perseverance and tenacity to get it done.

For fifteen consecutive days of swordfish training, Chen Du always maintained control over his perception, whether he was eating or doing other things.

He was so pleased with the results that on the fifteenth day, his chances of completing Swordfish training had reached 75 percent. With such a complex challenge, any single factor can play a decisive role. If you want to do 100%, it is basically impossible for Chen Du now.

He is already very satisfied with the result.

After a day's rest to restore the functions of the whole body to its best condition, Chen Du prepared to enter the simple water world for the swordfish challenge.

Before he could take out the mystery card, suddenly, there was a knock on the door.

(To be continued)