This is just a superficial cover made by Ji Zhi for the sake of concealing people's eyes and ears, with the many years of cultivation of the poison here and the highly corrosive venom, this simple steel plate is simply vulnerable, even if it can withstand the attack of the poison, there are only two people staying inside, and at this time, these poisons have been provoked, and the rest of the people are bad, and the people in the steel plate are either trapped in the steel plate or are killed by the poison breaking the steel plate, in any case, it is a dead end anyway. What really plays a role is Ji Zhi's secret operation, the steel plate and the wire rope gun are both metal conductive, Ji Zhi can input his own internal force into it through the conductivity of the metal, in order to achieve the same frequency as the outside air molecules, so that these poisons can not be felt. Internal force and electricity can be propagated by metal or human body as a conductor, and like electricity, it emits a magnetic field, and it can also be released with electricity after special treatment to cause explosion, both of which are the same, and it can also be said that electricity can be used as a visible expression of internal force. It's just that the internal force can still spread through the air when it reaches a stage, but Ji Zhi has not reached that state at this time. At the same time, Ji Zhi had to do it secretly in order not to let Liao Qing and others discover the mystery.

"I'll go." Forget the dust, Liao Qing and the others said at the same time.

Ji Zhi looked at it and said, "It's better for Ling Feng to come with me." Others are ready to fight in case the unexpected happens. To tell the truth, Ji Zhi used the air mentioned in the Yellow Emperor's Neijing for the first time (the air mentioned here is the aura in the air, excluding the polluting substances mixed in the air now. Resonance, the so-called air resonance, is that no matter where it is, as long as it is consistent with the vibration wave or frequency emitted in the air. You can hide yourself with a lot of things detected. This is very profound, and the air resonance that Ji Zhi has understood so far is limited to a static frequency that is consistent with it, as long as the air has a slight interference from the outside world. If the frequency changes, Ji Zhi can't be consistent, because he hasn't mastered the method of quickly changing the frequency of his internal force, let alone discerning the changes in the outside world through this frequency change. Ji Zhi was also not sure if he would be able to cope with the sudden change in air frequency, so he asked them to prepare for battle.

After Ji Zhi and Ling Feng entered the steel plate, through the spiritual guidance of the jade spirit, Ji Zhi relaxed himself and carried the fourth layer of the Yellow Emperor's inner scripture. Slowly put his hands on the wall of the steel plate, and felt the fluctuation frequency of the outside air after passing through the steel plate, Ji Zhi slowly adjusted the fluctuation frequency of the internal force in his body. Suddenly, Ji Zhi felt that the outside air and his internal force trembled at the same time, and then it seemed that a pipe connected his internal force with the outside air, Ji Zhi knew that this was air resonance, and he did it. At this time, I completely melted into the air here. Ji Zhi slowly controlled his internal force, mobilized the negative aura in the outside air, and wrapped the entire steel plate and wire rope, the whole process was completed, and Ji Zhi truly mastered the true meaning of air resonance.

At this moment, a peaceful internal force suddenly appeared at the same frequency, and at the same time, Ling Feng's voice sounded in Ji Zhi's ears: "Young Master, you have just mastered this method, and it consumes a lot of internal force, let Ling Feng help you." ”

Ji Zhi was surprised that Ling Feng could also do this, and he could also talk distractedly.

"Don't be surprised. He is a descendant of Taoism, and this will still be. It's just that the method he uses is different from yours, his method is just to use his own internal force to forcibly connect with the outside air, and cannot be completely truly integrated with it. Ling Feng's method is very consuming of internal force, this must have lost the true meaning in the inheritance of generations, and relied on some smart people to reluctantly revise the method, if it weren't for Ling Feng's deep internal strength, he wouldn't be able to use this method, hurry up and let him withdraw his internal force, he thought that you also used his method, in fact, your authentic air resonance method not only will not consume internal force, but will also unconsciously absorb its aura to achieve cultivation, and then you will rely on this method to absorb aura in the second stage. At this time, Yuling's voice also sounded in Ji Zhi's mind.

"But I can't speak now, I can't make Ling Feng withdraw his strength." After hearing this, Ji Zhi hurriedly communicated with Yuling with his heart.

"Use your internal force to control the external force to envelop Ling Feng, and send the internal force emitted by Ling Feng into Ling Feng's body along with the external force. Yes, exactly. Yu Ling said while Ji Zhi did it.

"By the way, what Ling Feng said just now is not sent to your ears with your mouth, but by using internal force to stimulate your eardrum with the same vibration frequency as the vocal cords, and the effect is the same. In the Yellow Emperor's Neijing, this is just the most basic way to practice controlling internal forces. Yu Ling continued.

"Huh? Is it? The most basic method, then why don't I know," Ji Zhi asked.

A hand with a middle finger suddenly appeared in Ji Zhi's mind, and he poked it one by one. "How can you not know? The Yellow Emperor's internal scripture is imprinted in the depths of your mind by the lord, I can't know, but as long as you have practiced and practiced with your heart, I will know that you have a spiritual connection with you, which means that you should practice everything I know. You have practiced in the first stage, although the first stage focuses on practicing your own body, but there are also internal strength and mental methods, which are complementary to each other, and the most basic method of controlling internal force in the internal strength practice methods mentioned in the third layer has this, how can you say that there is no? Yu Ling muttered a lot and raised his middle finger to disdain Ji Zhi.

Ji Zhi recalled that in the first stage, there were indeed many training methods to control internal force, but Ji Zhi did not expect that he could also vibrate the eardrum with internal force, at that time, Ji Zhi only used internal force to practice shaking things such as paper or glass, or forced out internal force to form substantial things such as fire or ice, and did not think of "thousands of miles of sound" at all.

"You, you are blessed, you have the innate true qi and the sufficient aura provided by my jade spirit, it can be said that you have ascended to the sky in one step, so you don't pay attention to those little tricks, but don't forget, sometimes some non-substantial things will bring unexpected gains, just like ordinary people would never think that they can absorb the essence of heaven and earth, concentrate it in their bodies, and form a powerful aura, which is an ethereal thing for them, it is better to take a knife to increase their strength. Invisible attacks are the most aggressive, just as invisible pressure will bring more pressure to people, think about it, you have entered the second stage, and there is still too much to learn in terms of internal force. Yu Ling said meaningfully as if she was teaching her own child.

Ji Zhi fell into contemplation again, Jade Ling and Ji Zhi can only communicate with each other, Jade Ling can't all know what Ji Zhi is thinking in his mind, Jade Ling doesn't want to know, its task is only to help and assist, it won't ask more if it has nothing to do with itself, generally Jade Ling will close the connection between the two, and will only open the communication when Ji Zhi needs it most. Now that Yuling's guidance has been completed, the rest is up to Ji Zhi himself, so Yuling chose to avoid it and let him comprehend it alone.

The conversation between Ji Zhi and Yu Ling and Ji Zhi's contemplation after that seemed to have passed for a long time, but in fact, it was only an instant, and the communication and touch of the heart were completed in an instant. After Ji Zhi came back to his senses, he tried to control a trace of internal force and sent it to Ling Feng: "Withdraw, internal force, don't need it, your help, the method I have learned is not needed, it consumes internal force." At first, Ji Zhi was not proficient in using internal force to pronounce him, but after a few words, he found the trick and his language was coherent.

'Can it really work?' Master. Ling Feng was still very worried.

"No problem, didn't you notice that even you didn't spend much internal energy?" After Ji Zhi finished speaking, he used a more advanced method to "think" and transfer the cultivation method of air resonance into Ling Feng's mind. This method of air resonance is just the most basic method of practicing internal force and absorbing internal force in the Yellow Emperor's internal scriptures, and the Yellow Emperor has also recorded it in the books that have been handed down to the world, but due to the loss of many years, the practice of the correct law has been lost, not to mention that Ling Feng is a Taoist person, so it doesn't hurt to tell it.

I saw Ling Feng gradually relax his whole body, sit cross-legged, make a handprint with both hands, and gradually enter the cultivation of selflessness. Ling Feng guided the true qi to run in the body for a week according to the method taught by Ji Zhi, Ling Feng felt that the internal force in the body increased by one point, and found that this method was much faster than the method he had learned in the past to absorb the external aura, and soon after Ling Feng ran for thirty-six weeks, he felt that his whole body was unprecedentedly comfortable, after taking a deep breath, he opened his eyes and saw Ji Zhi looking at himself with a smile, looking around, it turned out that when he was immersed in cultivation, Ji Zhi had already sent the steel cabinet to the opposite side, and at this time it was already the end of this layer of Yongdao.

"How? How does it feel? Ji Zhi asked when he saw Ling Feng waking up from his cultivation.

"Thank you young master for your advice, I have been running it for thirty-six weeks just now, and I feel that this method can not only speed up the speed of the true qi in the body, but also increase the absorption speed of the spiritual qi, and in a short period of time, I feel that my cultivation has improved a lot." Ling Feng said happily.

"That's good, I'll practice it later. We've been delayed here for a long time, and they must be in a hurry, so I'll go back and pick them up one by one, and you stay here to pick them up. After Ji Zhi finished speaking, he jumped into the steel cabinet and sealed his mouth, urging the true qi in his body to drive the steel cabinet to slide back quickly. (To be continued......)