The Qing Yu Sword split dozens of cracks on the ground in front of him, and the sea was surprised to find that the sword light that seemed to be an afterimage was a real thing! These dozens of sword lights are actually dozens of sword qi, if this is piggybacked, it will be like shredded potatoes at that time! But what surprised the sea even more was that Zhang Yuan was killed just now, but why did Zhang Yuan disappear in a flash?

Only the captain knows a little bit about the side of the person who is above the level, and the person present really understands what is going on, it is nothing more than those old vegetable gangs, in fact, this is the housekeeping ability of Zhang Yuan, the director of the mysterious institute, through the trick obtained by Qiankun Youlongbu and his own special ability, the name is Kering!

When Zhang Yuan worshiped under Xu Donghai's door, Xu Donghai told him that according to his qualifications, there was little hope of practicing to his own realm, and they all said that diligence could make up for clumsiness, but some gaps could not be shortened by hard work.

Xu Donghai began to cultivate Xuan Qi from his ancestors, and passed it down in one line, and now his genes have long changed, Xu Donghai's body itself is easier to absorb and store and transform spiritual energy and vitality, on the contrary, Zhang Yuan does not have this advantage, and Zhang Yuan is a monk halfway, and he only worshiped Xu Donghai at the age of twenty, so don't expect this Xuan Qi to surpass Xu Donghai one day.

But even so, Zhang Yuan didn't give up, he was very smart, and he was more active when he encountered problems, so when he was in the third year of his visit, he inadvertently found that his ability could be combined with Qiankun Youlongbu, and even Xu Donghai felt that this was a bit crooked.

Zhang Yuan's ability is actually not a big deal, or it is a kind of relatively chicken ability, that is, he can change the refraction angle of light.

This is a bit abstract, in fact, there is a special substance in his body, which will be mixed in sweat with metabolism, and when it encounters enough air, it will form gas, but it is unknown how much vaporization the density of this air is, or it comes into contact with some element in the air. Only Zhang Yuan himself knows about this.

But after vaporization, this substance will form a kind of protective film around the body, which is actually invisible and intangible, and is more like a scent molecule on your body all the time, which is simply a piece of clothing.

And after this substance vaporizes, it will carry out a kind of refraction of light in the air, to put it bluntly, after the photon falls on his body, it will be diffusely reflected, and it is not a diagonal refraction, but a diffuse refraction along this substance.

In this way, Zhang Yuan's whole person will often look less real because of the refraction of light. As a result, others always look at him a little blurry, like he is dazzled or his glasses are covered with a layer of white mist. This ability is almost useless, or rather a burden, but Zhang Yuan doesn't think so.

It took Zhang Yuan many years to control this substance similar to a gas coat, to put it bluntly, it is to control the location distribution of the sweating points of his body, where there is more sweating, there is a little less, and the thickness of the gas coat of this substance will be formed unevenly.

In this way, the light rays form another angle of refraction, bypassing the rays of light around themselves. Formation of a penetrating irradiation. In this way, this originally useless ability suddenly became Zhang Yuan's killer feature, that is, stealth!

But Zhang Yuan's stealth is limited, and that depends on how much he sweats. The substance in his body must be released through perspiration, and only the distribution of pores can promote the uniform distribution of this substance, so that the longer he continues to sweat, the longer he will remain invisible.

However, there is a limit to the amount of water that can be used to perspire in the body. Excessive perspiration can easily cause dehydration in the human body, which outweighs the losses, so Zhang Yuan must learn how to reasonably distribute the water in his body. and sweating skills, to put it bluntly, he has to find a way to control his sweat glands.

It is actually very difficult to control perspiration, and there are four main types of perspiration in the human body: warm perspiration, mental perspiration, gustatory perspiration and exercise perspiration.

Warm sweating is an external cause, this is uncontrollable, it is natural to sweat when it is hot, it is naturally impossible to sweat when it is cold, no matter how hard Zhang Yuan tries, it is impossible to control the weather conditions, obviously he can't change this.

Taste perspiration mainly depends on food, garlic, chili, ginger, curry and other foods, which will also form a perspiration state after eating. Athletic perspiration is best understood, running and other sports can cause a lot of perspiration, especially in fighting, this perspiration is particularly obvious, and it is also physiologically uncontrollable.

So the only thing he can do is to rely on mental perspiration to control his own perspiration, mental perspiration is caused by mental excitement or pain stimulation and other reasons, people will sweat in the palm of the hand when they are nervous, it belongs to mental perspiration, the largest perspiration is mainly the palm, toes and armpits 3 parts, followed by the scalp and other pores.

The incubation period of mental sweating from stimulation to sweating is very short, only a few seconds to 20 seconds, so under the influence of nervousness, fear, excitement and other mental factors, nerve impulses are transmitted from the cerebral cortex to the palm of the hand apocrine glands, and the concentration of norepinephrine increases, resulting in a rapid increase in the secretion and excretion activities of the apocrine glands in a short period of time, resulting in mental sweating of the palms.

There is also a mental sweating center, which often maintains excitability, and after stimulation, it produces reactive sweating, and this reaction time is shorter. Mental sweating is most obvious in the palms and feet, and can also be seen on the back of the hands, head and face, neck, forearms and calves.

When Zhang Yuan was already able to control nervous sweating, another question was placed in front of him again, that is, when he could control sweating, so how to control when not to sweat? If he encounters a state of high temperature, then won't he disappear in front of everyone's eyes? If you can't take a bite of the chili, this person will be gone!

So the first thing Zhang Yuan did was to avoid it, he had hardly eaten chili peppers in his life, and he had even forgotten what garlic tasted like, to put it simply, he didn't eat a single bite of all the food that could cause him to sweat, not even cocoa coffee.

The second point is that the outside temperature is beyond his control, the weather is always hot, and he can't stay in the air-conditioned room all his life, and even if the outside temperature is very low, as long as he walks a little faster, it will also form natural sweating, how to solve this.

Xu Donghai thought of a solution for him to this problem, that is, an extremely rare herb called phoenix tail.

The phoenix tail is a poison, so the phoenix grass never grows any vegetation around, and the growth distance between the two phoenix tails is not less than five meters, the appearance of the phoenix tail is very similar to the tail of the phoenix, the height of the mature phoenix tail is thirty centimeters, the leaf width is less than seven centimeters, it is golden red, and it will change twelve colors within eight hours after being harvested, and the twelve dark colors indicate that the phoenix tail is in different stages.

The first color is red, in the first stage, the phoenix tail saw the blood seal, and after direct contact with the skin, humans and animals died on the spot, even if they smelled the smell released by the phoenix tail, they would definitely bleed from seven orifices, and they would not live for five minutes.

The twelfth color is dark brown, which is also the final form of the phoenix tail that has been preserved for the longest time, and at this time the toxicity will be much less, but it cannot be used directly or stained on the wound, otherwise it will die if it is not treated in time.

Normally, there is only the first and the last one to use the phoenix tail, and the first one will kill people on the spot, but because the toxicity of the phoenix tail is directly related to time, it is better to use the phoenix tail than to use the crane top red.

There are not many people who know the last way of using it, and only a very small number of people who specialize in this poison and some tribes know about it, and that is to cause people to fake their death. The phoenix tail is crushed and burned, and the gas toxicity formed will not kill people, but it will make people unconscious.

After reaching a certain amount, the cardiopulmonary power will be reduced, the breathing speed will be extremely slowed down, and even the phenomenon of apnea will occur, if it is a master of medication, it will cause the user's heart pulse to be static after using the phoenix tail, breathing is interrupted, the pupils are slightly dilated, and the blood gradually coagulates, stopping metabolism, such as the body no longer sweating.

People will be in a kind of early stage of death, this state will last for five to ten minutes, if this time limit is exceeded and not rescued in time, then the person will enter a real state of death, unless Da Luo Jin Xian or Lord Hades, otherwise no one can save this life.

Zhang Yuan worked hard to find this phoenix tail, and then found a place to start planting in a large area, and after toxicity filtration and decomposition and extraction of the technical department, the phoenix tail was finally reduced to a minimum of toxicity while retaining its characteristics. And this thing has become the tobacco in Zhang Yuan's pipe that almost never leaves his hand!

After countless experiments, the Department of Technology provided Zhang Yuan with a detailed smoking schedule, which recorded the duration of the medicinal properties of Phoenix Tail, and how long it was after each smoking before it could be smoked a second time, and it was necessary to do it a second time.

In this way, because of the relationship between the phoenix tail, Zhang Yuan can not emit a drop of sweat for twenty-four hours a day at most, so Zhang Yuan can completely control when he appears and when he disappears, the only thing that makes him uncomfortable is that he can't sweat, which makes his body temperature rise and the frequency of urination increases significantly.

In the actual combat process, Zhang Yuan fused the Qiankun Dragon Step, which was really elusive around the other party, Zhang Yuan could not only move quickly around the other party, but also disappear when he disappeared, and appeared again when he said that he appeared and appeared, as if he was a lost ghost, he was erratic, he couldn't see or catch it, so that the enemy couldn't guard against it!

Because Zhang Yuan has to control the amount of sweating and the timing of sweating, it is impossible for Zhang Yuan to maintain this state in battle, which must rely on the cooperation of Qiankun Youlongbu, resulting in the truth and the falsehood, the virtual and the real, and even the seeing is not necessarily the truth.

And because of this kind of trick of the dragon seeing the head but not the end, it is like the moon looming in the middle of the clouds, so Zhang Yuan gave this trick an elegant name, called Kaiyun!

And today, Zhong Lifeng thought that a sword that would be hit was dodged by Zhang Yuan, and Zhang Yuan used this Kaiyun! (To be continued......)