"Do you see?" After demonstrating it two or three times, Pu Zitong's soul body was pale and shiny, asking Zhang Su to confirm whether Zhang Ji had learned the soul technique he had taught.

"It's just to use soul power to create two layers of special soul power coating, and then layer them on the soul, right? The first layer of coating can play a role in resisting the invasion of ghost qi and blocking a large amount of ghost qi from the soul, but because the resistance is limited, it is inevitable that some ghost qi will penetrate through the first layer of coating and continue to penetrate, so the second coating is also needed to block the invading ghost qi and avoid the invading ghost qi from quickly infecting the soul, because the two layers of coating are wrapped on the soul, so I can't release soul power to the outside either, probably like this, right? After watching Pu Zitong's demonstration a few times, Zhang Ji pondered for a while, and with his knowledge of the existing soul skills, he quickly understood Pu Zitong's 'Gu Trough' soul skill know-how, and replied.

"That's right, that is, you need to condense two special soul membranes with different attributes at the same time, and they can fit perfectly on your soul body, not only that, but you also need to leave a thin layer gap between the two layers of soul membranes, and the size of this gap is the key to determining how long you can stay in the ghost qi." After Zhang Su answered, Pu Zitong nodded, and then explained to Zhang Su.

"The gap is the key? What do you mean? Wait, I seem to understand ......, so it is, so it is, it is actually difficult to completely resist the powerful ghost qi by relying on the condensation technique of soul power alone, as long as the ghost qi cannot be dispersed, the ghost qi will continue to corrode and infect my soul and soul power condensation technique, so you taught me' Gu Trough's soul technique is simply a delaying technique to slow down the soul being invaded by ghost qi, and it cannot completely prevent the soul from being eroded by ghost qi, and the gap between the two layers of defensive coating is the space for temporary confrontation and delayed erosion, the larger the space, the longer it can be delayed in the process of resisting, so whether the thin slit space is completely occupied by ghost qi is the fundamental factor that determines whether I can continue to stay in the ghost qi, right? After Pu Zitong explained, Zhang Su was a little puzzled at first, but after observing the faint light on Pu Zitong's body for a moment, Zhang Su seemed to see something, and suddenly said, while talking, he tried to imitate Pu Zitong's 'valley trough' technique, and also tried to make a soul membrane.

"Well, although the outermost soul membrane can play a big role in resisting the ghost qi, but in the rich ghost qi, it will still be broken through, if the ghost qi after the breakthrough is not a lot, the second layer of purified soul film can also have some effect, and after staying in the ghost qi for a long time, the ghost qi between the outermost soul membrane and the second soul membrane accumulates, making the second layer of soul membrane difficult to resist, then your ontological soul is in danger of being eroded, so the thin slit space between the outermost soul membrane and the second soul membrane is the battlefield where you secretly compare with the ghost qiThe longer the front, the longer you can hold it out. Seeing that Zhang Su understood, Pu Zitong continued to add, and then raised his eyes to examine the soul membrane condensed by Zhang Su to determine whether Zhang Ji really understood the performance of the 'Gu Trough' soul technique.

After Zhang Su understood the principle of the 'Gu Trough' soul technique, he quickly imitated the soul wave condensation emanating from Pu Zitong's body

gathered the same soul membrane on both sides, because Zhang Su's soul power was more powerful, and it also had the blessing of the thunder attribute, when the two layers of soul membrane condensed, there was actually a strong soul light flickering on the surface of the body, although the soul light flickered did not illuminate the dim bookstore in the present world, but it also photocopied the brilliance of the soul realm space where the bookstore was located, and for a while, it was like day, and it reappeared bright in the dark sky.

"No, although you have also condensed two layers of soul membranes, but because the soul power is not controlled in place, the soul membrane is too powerful, if you sneak into the ghost nest in such a posture, although you can resist those ghosts for a long time, but you will soon be discovered by the ghosts in the ghost nest, you have to try to restrain the soul power, weaken the power on the soul membranes on both sides, so that you can block the ghost energy, and do not let the soul power emit a strange fluorescent light, so as not to be noticed by the ghosts in the ghost nest." Although the soul membrane condensed by Zhang Su was strong and could resist the ghost qi well, because of the flickering soul light, the soul power leaked obviously, which made Pu Zitong not very satisfied, shook his head and reminded Zhang Su, and proposed a method to improve it for Zhang Su.

"Haha......, I just imitated your soul wave, I didn't pay attention, I didn't expect to have this side effect when I used it with all my strength, wait a minute, I'll try to adjust the release of soul power." After Pu Zitong reminded him, Zhang Su scratched his head and said stupidly, obviously knowing that he had used too much force, he quickly put away his soul power, dispersed the soul membrane around his body, adjusted the operation of his soul power, and planned to start the condensation of the soul membrane again.

With the experience of condensing the soul membrane for the first time, Zhang Su suppressed the release of the attributes in the soul power as much as possible when he condensed the soul membrane for the second time, and controlled the strength of the soul power at a low level to ensure that the power of his soul power would not spread excessively, attracting the attention of those souls and ghosts in the musklizard ghost nest. No one could see that there were two layers of soul membranes on top of his soul.

"Yes, the strength of the soul power this time is just right, and it won't make people see that you deliberately use techniques to resist the ghost qi, but from the outside, I can't see the size of the gap left between your two layers of soul membranes, and I can't judge how long your two layers of soul membranes can last in that ghost qi, I can only give you a reminder, if you sneak into the ghost lair, and find that the outermost soul membrane and the second layer of soul membranes are already full of ghost energy, stop the exploration immediately, and run out of the musklizard ghost nest, once the second layer of soul membrane ruptures, Your soul will be very susceptible to ghost anger and resentment, and at that time, you are likely to turn into a ghost and fall into the ghost path, remember. Seeing that the soul membrane condensed by Zhang Su for the second time was no longer bad at all, it was completely in line with the effect of the soul membrane she had condensed before, and even better than the effect she had cast, Pu Zitong nodded with satisfaction, affirmed, and then reminded Zhang Su again, asking Zhang Su to pay attention to his own safety.

"I know, I can't do it once, I can't go in again after I get out, I won't risk dying before the dumpster dies, don't worry, I have my own measure, pour

It's you, hide your soul power here as much as possible, the night is coming soon, and then it's the carnival of the ghosts, there should be a lot of ghosts leaving the hairhouse to hunt for souls outside, be careful of those ghosts, don't be found out by those ghosts, otherwise you will become the target of the siege of those ghosts. After Pu Zitong reminded Zhang Su, Zhang Su also reminded Pu Zitong, because according to his accumulated experience in hunting souls and catching ghosts, he knew that at night was the most rampant time for ghosts and ghosts, at this time, anyone who did not return home could become the target of ghost hunting, and a soul master like Pu Zitong with prosperous soul power, once the soul power was dispersed, it was easier to be coveted by ghosts.

"Understand, near this ghost lair, it is inevitable that there will be strong ghosts going out to hunt, I will pay attention." Hearing Zhang Su's reminder, Pu Zitong nodded again and responded, took two books from the bookstore at random, opened them and placed them in front of himself and Zhang Su's body, and then hid his soul power, pretending to read a book, helping Zhang Su take care of his body and not say anything more.

Zhang Su saw that Pu Zitong was ready, and he didn't say more, his soul changed into the appearance of a slender and round-minded soul ghost that he had caught and hunted, and after the change, he immediately activated his soul power, and condensed two layers of extremely fitting light soul skin on his soul to wrap himself, and after confirming that the transformation was correct and there was no problem with the soul skin coating, his soul flashed, and he quickly rushed out of the corner bookstore where he was, and flew towards the unfinished community where the musklizard ghost nest was located, and rushed into the diffuse ghost aura in the blink of an eye, slowly moving forward in the ghostly energy.

After walking dozens of meters, Zhang Su finally walked to the street corner across the road according to the musk lizard's ghost nest, sensed the surroundings, looked at the surroundings with soul eyes, and looked at the surroundings without ghost guards, and walked across the street to the unfinished community, planning to go straight to the Yellow Dragon and enter the main room of the musk lizard ghost's ghost nest to investigate.

"Where did the imp come from? Why are you so unruly?! Just as Zhang Su crossed the road and broke into the street, a terrifying ghost with a rat-eared face and a large jagged mouth appeared from the door of the unfinished community without warning, condensed a soul power crutch in front of Zhang Su, blocking Zhang Su's way forward, and questioned Zhang Su.

"Lord Shark, I'm a corpse, don't you know me? Today, Lord Musk Lizard sent me to be on duty on the third circumference, I have been on duty all day, and now the night is dark and gloomy, I want to ask Lord Musk Lizard for a night off, go outside to hunt and kill souls, and come back to honor Lord Musk Lizard, I hope that Lord Shark Gill, you can be gracious, let me go, so that I can ask Lord Musk Lizard for instructions in advance. After the sawtooth asked, Zhang Su quickly put on a submissive posture and knelt on the ground, making up a reason to explain to him.

"No! Guarding and patrolling is an order of adults, no one is allowed to leave the post without authorization, I was arranged to guard today's second circumference, and I have been here for half a day, and I have never left half a step, you have been arranged to be a guard today, you should obey the rules and discipline, how can you run around? It's good that I know you, otherwise I'll kill you right now, go back, don't make me angry. After Zhang Su explained, the jagged ghost had a fierce face,

Turning its strange round wheel, it firmly rejected Zhang Su, and didn't seem to intend to let Zhang Su pass.

"My lord, the reason why I asked is because I set up a ghost game, there will be a soul hooked today, and there is more than one, if the adult agrees, I will not only sacrifice my soul to the musklizard ghost, but also reserve one for the shark cheek you to fill the dessert, I wonder if you can taste it?" was rejected by the shark cheeks, Zhang Su did not leave immediately, his eyes rolled, and he continued to ask the shark cheeks ghost.

"Boy, don't scold me, if there is no soul to send to my house tomorrow, I will eat you to replenish your soul!" Hearing Zhang Su say that he wanted to taste his soul, the shark's face was still fierce, but his tone was directly loosened, and he said coldly to Zhang Su, and after speaking, he dispersed the soul staff in his hand and made way for Zhang Su.

(End of chapter)