The voice of the black-robed man came from a no-man's corner, and the swaying space reflected a transparent outline.

How long had he been there, why he hadn't noticed it, and that July had to be standing there with his sixth sense.

The water waves dissipated, the figure in front of him gradually became clear, the head outline and limb curves extended to the feet, and the faint smile of the black-robed man appeared in front of the two.

Stealth? Ning Yun's mouth was surprised to be in an "O" shape.

In this world, how can someone be invisible, and how does he do it?

In the end, the realization of stealth is a clever use of light, and the first way is to make the light travel straight through the parts of the body, which is simply a kind of fantasy. The second is to change the direction of the surrounding light, so that the light curve bypasses the occlusion, so as to achieve the visual invisibility of the occluding object.

Ning Yun's smart eyes looked at the black-robed man, turned to July, and asked July what kind of witchcraft could achieve invisibility.

"Old man, how did you do that?" Silently appeared around him and the girl, if he didn't wait quietly, but attacked at any moment, the more Ning Yun thought about it, the more scared he became.

A wave is better than a wave of laughter, the black-robed man smiled inexplicably, the laughter was cold and inexplicable, "What, girl, do you want to learn?" ”

"Cut!" Ning Yun replied disdainfully, and cursed in his heart: Old fox, who cares about your crooked ways. On the authenticity of the witch Gu is naturally the Heishui River in Miaojiang, since the girl can find him, it proves that there are flaws in this stealth method. After thinking through it, Ning Yun put his mind at ease.

July's eyes revealed a hint of coldness, and the pure beauty of the invisible temperament was more obvious. The black-robed man and July glanced at each other, and July covered his mouth slightly, smiled softly, and his laughter was refreshing, giving people a feeling of spring breeze.

Could she see through this tactic? The laughter gave him the feeling of falling into an ice cellar, which was a little inexplicable, and he became more and more puzzled about the girl who didn't understand this witch clan, "Girl, what are you laughing at." ”

The black-robed man stopped laughing and asked solemnly. Because, no one dares to echo him when he laughs, and at the same time, it also brings him all kinds of discomfort.

July stopped laughing and apologized: "The seniors misunderstood, and July didn't mean to laugh at the seniors." ”

Just as the laughter began, July had already noticed the position of the black-robed man, and immediately secretly calculated the direction and pace, and roughly understood what was going on. The complex arrangement of Qimen spells must be combined with exquisite array arithmetic, which is why sutra arithmetic is also a compulsory course for practitioners to get started. If you don't learn math well, it will be difficult to master Qimen Dunjia.

Seeing that the black-robed man's face was slightly gloomy, July bowed down and saluted again, and asked unhurriedly: "Senior, is this Du Men right?" ”

This sentence alone solved many difficulties, and the black-robed man admired the girl in front of him more and more, secretly thinking how good it would be if she was not the great witch of Miao Jiang, this kind of status and status is supplemented by the wisdom of surprise, and the future is promising, "Hmm! He nodded silently.

"Dumen" is known as the meaning of concealment, suitable for concealment and shelter. Therefore, the best way to enter the "Dumen" is to hide your body.

"Shocked 174, Xiaohan 285. This is the method of escaping the number of the yang. Looking at the steps of the black-robed man's feet, combined with the distance between the front and back and the left and right from the wall, July easily calculated his position at this time.

Eighteen live disks demonstrate the pattern of a year, he looked at July in surprise, this is a standing pattern that can only be obtained with exquisite calculations, and she was unexpectedly broken, and couldn't help cursing in his heart, "How far do you want to be demonic." Keep saying that he is not very proficient in Qimen Dunjia, and he is not very proficient to this extent, what if you want to be really proficient. ”

"There is a hidden word in this door," July's thoughts were extremely sincere, and the black-robed man was obviously holding his breath, but he couldn't pull down his face when he saw her pretty face. July was already implying that the reason why he could be invisible was the effect of the Dumen formation, not his ability.

The black-robed man was also a person who was proficient in Qimen Dunjia, and asked rhetorically with the meaning of taking the school examination: "Then why am I here now?" ”

The concealment of the formation relies on the transformation of space, and the situation of the matching hall has the same effect, July pondered for a moment, and his doubts were suddenly resolved, "The stunned Shangyuan is a game of Yang Dun." Each hour is positioned several rounds, which are subject to the solar terms and the sun. The wheel of time is changing, and concealment is not permanent. ”

This kind of ingenious formation is exactly in line with Tong Bingyang's concept of magic, and the rotation of the solar terms means that the ingenious formation within the "Dumen" has begun to operate.

The black-robed man had to be deeply admired, Qimen Dunjia is a profound macroscopic knowledge of the universe, and it is also a kind of magnetic field performance of alternating time and space, it is difficult for ordinary people to figure it out, he didn't expect that there would be such a strange person in Hei Miao's generation, "Well, that's not bad at all." All kinds of signs show that all the relics are left by Tong Bingyang more than a thousand years ago. ”

The black-robed man had a sad face, very few people who had studied the number of techniques had heard the name Tong Bingyang, and he was one of the few people, so he knew the power of this demon who could be as famous as Zhuge Liang.

"Dumen" Xuanqi, the best way to dissolve the formation is to hide the form, and at the beginning of the formation, the formation already contains the mechanism of the hidden form, so that as soon as he stepped into the Dumen with his front foot, the form gradually disappeared. In fact, it was the trick of the people who set up the formation at the beginning, Tong Bingyang was an extremely proud person, and the Qimen he laid out was naturally not allowed to be easily cracked, he was warning the people who entered the formation in this way, don't try to crack it by hiding it.

July was relaxed, "In this way, I am relieved." ”

Feel relieved? What does that mean, could it be that she has already thought of a way to get through Dumen safely? The black-robed man looked at July suspiciously.

"I heard that the old people in the clan said that Tong Bingyang is very talented, but he is also a very playful person." There may be a characteristic of this kind of human array, the arrangement of the hidden and hidden spatial alternating formations experienced by the talented black-robed people is actually meaningless, which is enough to show that the Tong Bingyang array has a kind of "willful" meaning in it.

The black-robed man thought for a moment, and then suddenly said, "You mean, it may not be that Dumen is thrilling, but that it is mainly strange?" I just don't know what Tong Bingyang will put behind Du Men what he thinks is weird and fun.

Four solar terms, yin and yang retreat. This is Tong Bingyang's proudest number of achievements, July guesses Tong Bingyang's personality, and this person is good at guessing the formation techniques that may exist in Du Men.

"There should only be one means, and after that, it will be over." July gently pulled up a strand of loose hair on the side of his sideburns, his face was as quiet as an ancient pool, and he said casually.

What should appear will always appear, there is no way to avoid it, there is no way to hide. The time of the season has changed, and the situation in the Dumen passage is about to change. July is engrossed in paying attention to the changes around him, and any movement can be a breaking point, especially in this environment, which can test a person's carefulness.

"Click!" "Boom!" The sound insulation in the long corridor is excellent, and the sound of subtle stones rubbing and turning is very low, but it is still keenly captured by July.

Glancing at the black-robed man, July could see from the other party's eyes that he had heard that voice as well. Those familiar with the burial environment know that this is a sign that the machine is beginning to function.

Hidden behind the ice chalcedony wall is probably a large set of brackets, but it is not known what kind of energy source is the driving force. After more than 1,000 years of grinding and corrosion, it can still operate normally.

Then, the sound of slow quicksand penetrated into the corridor. Ning Yun's hand was attached to the ice color chalcedony, and he could even feel the ice color chalcedony vibrating slightly.

"Girl, I'm afraid." In the corridor, the three of them held their breath, and the atmosphere became extremely tense for a while. The sculpture of the five-clawed golden dragon on the ice color chalcedony and the tailless fox looked more and more weird, as if they were jokingly smiling at the three of them.

July reached out and pressed Ning Yun's shoulder with a jade hand, taking him into his arms and comforting him.

"What should I do now?" The black-robed man appeared to be unusually calm.

"Wait." July said.

“……”

The lines inside the crystal clear ice color chalcedony wall gradually changed slightly, and imperceptible small cracks were formed from the wall, and the cracks about a millimeter thick were difficult to distinguish.

After a short period of fusion, the crack became bigger and bigger, and finally aroused the vigilance of the three people, and the black-robed man stroked the extremely oily wall, and said in surprise: "Crack, the wall is shattering." ”

The wall made of ice color chalcedony extends to the front end, and the length of the corridor is unknown, and at the rate at which the cracks grow, the walls only crumble in the morning and night.

Ning Yun put his hands on Qiyue's waist, buried his head in front of his chest, poked out a pair of eyes to look at the changes in the wall, and asked worriedly, "We, will we be buried alive?" ”

Calm, July reminded himself more than once in the bottom of his heart. Although the hardness of ice color chalcedony is not the strongest material in nature, what is the cause of such large-scale wall cracks? The cracks are like numerous anthills distributed on the inside of the wall, gnawing at the chalcedony. If this pattern continues, the chalcedony that supports the tunnel structure will collapse due to the overwhelm, and the end result will be to bury them alive.

After a quarter of an hour, the wall was full of cracks, about a centimeter thick, interlaced in the form of a cross net, dividing the ice chalcedony wall into countless small pieces. This change continued, and the vibration that surged from all directions made the three of them suddenly balance, and they slowly squeezed into the middle of the corridor to maintain their balance.

"There are no cracks in the ice chalcedony." July reacted violently, the three of them were too impatient, because the transparency of the ice color chalcedony is extremely high, even a touch of light can pass through the chalcedony, if it is a net-like split light source shot from inside. This creates a visual error that can lead to the impression that the walls are cracking.