The principle of the six forms Chu Yun had also heard Smoker say before, it was something similar to qi. There is a kind of qi in the body of the cultivators in this world, and the simplest example is the swordsman's slash and the application of the six forms.

The iron block is to act qi on the muscles and skin, causing them to produce an effect similar to that of the iron cloth shirt and the golden bell jar. The moon step is to expel the qi from the soles of the feet and then step on the qi. The paper body is painted by covering the surface of the body, feeling the flow of air, and sensing and dodging according to the air flow generated by the enemy when attacking......

This qi is like the internal force of a chivalrous man and the chakra of a ninja, and different ways of using it will produce different effects. Therefore, even if you know the principle, it is very difficult to study it on your own.

Sanji's Demon Wind Foot is actually similar to the Six Styles, combining Qi with his own moves, so it can produce so much power.

When a person uses this qi to the extreme, this qi will change and become the domineering that people are familiar with!

It's just that this kind of qi is difficult to be manipulated before it is promoted to domineering, but it instinctively makes the physique of the people in this world stronger. This is also why the physical fitness of people in this world is the same as that of monsters, all because of the qi hidden in the body.

The Six Naval Styles not only include the six most practical moves, but also have methods for cultivating Qi. It's a pity that these methods are too cruel and arduous, and even the elite of the navy can only learn a few. Most of the navies who have learned the Six Styles are extremely gifted in their own right.

In this world, you can't become strong just by working hard, and the bones that die in the middle have long become a delicacy for murderers in the sea.

"So that's the case, is iron a way of using qi to strengthen the connections between tissues, cells, atoms, and molecules, so that their structures are more stable...... This is a bit too scientific. Chu Yun didn't expect to encounter a phenomenon that could be explained by science in this animation world.

In fact, what Chu Yun didn't know was that the development of the Six Styles was originally participated in by people from the Ministry of Science, and it was the Ministry of Science's research on the human body that provided a lot of help for the creation of the Six Styles.

For the control and cultivation of qi, Chu Yun had also carried out it in Luoge Town, otherwise he would not have been able to shave. At this time, he began to seep qi into the deeper layers of his body according to the method that the other party had said.

"Ahh It hurts! Chu Yun only felt his muscles twitch, and the severe pain made him scream.

"What's wrong with you, Captain, is this guy lying to us! I'm going to kill him first! Luo Da was a little nervous when he saw that Chu Yun, who had always been extremely powerful in his eyes, actually let out such a wail.

"Don't, don't! This is quite normal, and practicing iron is all about going through such pain. The shield man hurriedly explained.

Luo Da still held the hilt of the sword tightly, and was relieved until Chu Yun was no longer screaming.

It was hard for Chu Yun to imagine how the greedy man in front of him had cultivated into an iron piece, and the pain from the cell level just now was not something that ordinary people could endure.

The shield man seemed to have guessed something when he saw Chu Yun's eyes, so he spoke: "Actually, I took medicine and then trained, so the pain I felt was not so great......

"Captain, don't you have a similar candy? Do you want to ......?"

"No, the first time is the most painful, just get used to it." Chu Yun's qi is relatively special, mixed with the power of nature, so his repair ability is very strong, and the pain and minor injuries caused just now have all been repaired.

Chu Yun took a deep breath, he already had some clue just now, and it would be much easier to try again this time.

In the eyes of everyone, Chu Yun's chest muscles began to tense, and then seemed to become a little smooth.

"Rodda, attack me with all your might. See how it goes. Chu Yun said excitedly to Luo Da.

Although Luo Da didn't hesitate too much when he heard Chu Yun's words, he clenched his fists and smashed it fiercely.

"Bang!"

"Hiss~ It hurts!" Rhoda had used all his strength just now, and his bones had almost not cracked due to the reaction.

"Dizzy, I'm asking you to attack with a sword, don't worry, my defense is very strong." Chu Yun could clearly feel the changes in his body, and with Luo Da's strength, he should not be able to break through his defenses. Besides, even if you break through your defenses, you can heal quickly.

Rhoda had felt the hardness just now, but he didn't hesitate.

"Drink!" The sharp sword in Luo Da's hand slid through an arc towards Chu Yun's open chest.

A piercing sound sounded, and Chu Yun's outermost layer of skin still didn't resist the attack of this sword, but it was only a layer of skin, and it didn't cause any damage to Chu Yun.

"How is it possible, actually, to learn iron all of a sudden!" The shield man and the wizened old man couldn't believe their eyes.

Especially the thin old man, he hadn't learned a single six-style after decades of learning, and finally joined CP8 with his Devil Fruit ability and rich espionage experience, and he almost vomited blood when he saw Chu Yun learn it so quickly.

"Isn't that easy?" Chu Yun knew the difficulty, if it wasn't for the power of nature, he wouldn't have been able to learn it so quickly.

If his power to manipulate the mysterious qi is 1, then the force to nature is 100. You can manipulate the forces of nature almost as you please.

As soon as the light on Chu Yun's chest flashed, the wound completely recovered. Then a trace of green light flashed through his body again, and this time, he would use all the power of nature to iron according to the method of the six forms!

"Roda, use your strongest attack, the must-kill you learned from Hawkeye!" Chu Yun's body was like a diamond, not only smooth but also emitting this faint emerald green light.

"Wu ...... Armed with color hardening! This is armed color domineering! The shield man's eyes widened, where is this still iron, let alone a more advanced domineering.

"It's worthy of the captain, he learned it so quickly, it seems that it is already difficult to hurt you." But Rhoda was not discouraged, clenched the long knife in his hand, and closed his eyes.

This was a way for him to quickly concentrate his mental power, and the moment his eyes opened, an extreme cold light pierced the darkness in front of him.

"One Cut, Two Cuts, Breaking the Air!"

The sharp sword light made Chu Yun's eyes light up, but he didn't expect that the weak "scholar" at the beginning was now also scolding Fang Xuan.

However, this seemingly powerful attack made a "click" when it hit the emerald green armor. It came to an abrupt end.

The original sword that had followed Roda for the longest time was actually directly broken in two.

Looking at Chu Yun's chest, not even a scratch exists!