Flying has always been one of the dreams of human beings, and in so many years of human beings, through the efforts of generations, the way of human flight has blossomed.

According to historical records, in the twenty-third year of Emperor Liu Yuan of the Han Dynasty, a mechanic named Wright created a longitudinal wing, which can glide hundreds of meters in the air, which is the prototype of many paragliders later, and Wright is also known as the father of flight by mechanics. To this day, all kinds of various types of gliding weapons are still emerging, constantly updated and replaced, and Wang Yanyan used a flying wing when he killed the Heavenly Fire Sect Master, which is one of the representative objects of the flying device of the contemporary machine faction.

When the human world had just stabilized and there was no division between the two kingdoms, Xu Shenfeng and Tang Shengtu formed a team called the "Flight Committee Group" composed of mechanics and Xuanka masters from the two countries to jointly build reasonable flight combat tools. With the split of the Human Alliance, the team naturally fell apart, but the experience they left behind provided great help for the later development of flying vehicles.

Eleven years after the Human Alliance, the hot air balloon that Han Xu took in the Void Gate came out in the Kamikaze Federation, but this tepid way of flying could not meet the dream of human beings chasing the sky, let alone meet the needs of combat. In the 138th year of the People's League, a team of six mechanics successfully invented the airplane. Thirty-six years later, in the 174th year of the People's League, another group of helicopters built by mechanics also appeared.

The emergence of all kinds of flying objects, marking the gradual maturity of the flight system of the mechanical faction, human beings have officially entered the age of flying, and these modern multi-person flying tools, can also be expanded to civilian use, but because of the existence of human resources, as well as the monsters in the eye, the center of gravity of the federation has never dared to shift, and the main funds and energy need to be used for defense and armament, so the work of building an airport within the federation is not realistic, and the aircraft has been used for nobles and the army, according to the current situation, there is no possibility of breaking the ice for many years。

The mechanical faction performs brilliantly in flight, and on the Xuanka system, there are also many means of flying, such as the six-star Xuanka "Walker Resisting the Wind" with wind attributes, which controls the airflow to achieve the goal, and the "shuttle" that relies on the child and mother cards to complete the flight, and relies on the repulsion generated between the child and the mother cards after urging the Xuanka, which produces a continuous force and flies to the sky.

A few years ago, Li Zhengwang also proposed to try to domesticate birds and monsters as a means of human flight, but considering the danger of monsters, this proposal was rejected by His Majesty, and the major royal families also expressed opposition, and in the end this plan ended in a hurry.

Flying has been tried and pursued in all major factions, and the footsteps of human beings will not stop exploring, and many people are still trying to create new flying concepts, but in the martial arts department, flying has always been a fantasy, and it is also a forbidden word in the martial arts department.

The essence of flight is to fight against gravity, whether it is the mechanical faction or the Xuanka faction, the way to achieve flight is to provide kinetic energy to resist gravity, so as to achieve the effect of flight, but the source of kinetic energy of the martial arts system is not used or not, and it is the people themselves who generate and provide energy.

Even if you practice martial arts and open up the meridians, it is impossible for people to offset the constant characteristics of people themselves, for example, the eyes can catch the gaze, but the nose cannot, and no matter how a martial artist cultivates, it is impossible for the nose to be able to see things like the eyes. Instead, matter will have gravity, which is also an eternal material characteristic, and no matter how a martial artist cultivates, he cannot completely cancel out gravity through his own body and vitality.

Therefore, the only thing a martial artist can do is "flight-like", a professional term proposed by the mechanical faction, which describes the martial arts method of light power floating that Yuan Fei showed at the moment: by constantly looking for a point of borrowing, to accomplish something similar to flying.

There is no borrowing point in the air, so it is impossible for the martial artist to stay in the air for a real long time, so the martial artist cannot rely on the martial arts itself to complete the flight, and can only continue to borrow strength to achieve a short period of stagnation.

This is called "class flight".

But light power water floating, this does not require vitality at all, relying solely on the body and skills to complete the high martial arts, even if it is just a flight, it still makes Han Xu and Bai Liuyi breathtaking.

No matter how brilliant the means achieved by external objects are, they cannot change the resonance that can only be aroused by the power exerted by the human body itself.

In the eyes of Han Xu and Bai Liuyi, they were all delighted with this martial art.

Just in the blink of an eye, Yuan Fei arrived at the other side, and then stepped back from the lake on the other side, the white cold air seemed to be the fairy qi wafting in the fairyland, and the body of the age could not be seen clearly during the exercise, so it was as eye-catching as a touch of fire.

Yuan Fei returned to his original position, and there was not even a splash on his body, as if he had never left here.

"Do you want to learn?" she said, looking at the two young men standing beside her.

"Yes!" both nodded sincerely at the same time, and said in unison. In their eyes, the figure of this teacher has a rich brilliance.

......

Yuan Fei grabbed them and led them across the lake to the third mountain.

In the third peak, Han continued to find a pheasant's nest in the grass, caught a fat pheasant, ran happily to the lake, swept a clearing in the snow, picked up firewood, started a fire, and began to roast chickens.

Yuan Fei gathered around the fire and explained to them about the three kinds of foreign martial arts to be taught.

There are a lot of doorways and skills in it, and the two of them listen attentively.

Soon the chicken was cooked, and the three of them seemed to have come out for a picnic, and one of them held a piece of chicken and feasted on it.

It's snowy, it's cold, and eating chicken around the fire is undoubtedly the most pleasant thing.

"Han Xu, you obviously know martial arts, but when you take the qualification exam, why don't you choose the martial arts department as the second faction for the assessment?" Yuan Fei took a bite of chicken, such a fun and comfortable activity made her face a little more childish, and she couldn't help but chat at the moment.

Han continued to swallow a mouthful of meat, his throat was full of the pleasant aroma of oil, tired of eating regular meals, and eating such wild meat again, his heart was beautiful, hearing Yuan Fei's question, he thought that the teachers knew enough things, and even knew these details in his qualification examination so clearly, and replied: "Because Xuanka is my biggest support, if Xuanka can't pass the assessment, the plus point of the martial arts department is also in vain, so I only chose the Xuanka department." ”

Yuan Fei nodded, and looked at Bai Liuyi, who was slowly tearing the fragrant chicken with her hands, and her cold and cold appearance looked extremely cute, which made the lines of her face soften a lot, and said: "By the way, Liuyi, the summer project of your escort students has not been completed, at that time, it was Wang Baixu who helped you secretly Zhang Luo, I heard from the rest of the academies that you saw the World Destroyer at that time, and you also chased after it, do you know that the two students of Gudan Academy died later?"

The topic suddenly reached the most secret part of Han Xu's heart, the original smile on his face stiffened for a moment, and then quickly returned to normal, looking at Bai Liuyi and Yuan Fei curiously, as if he didn't know anything, and asked, "The summer program for escort students, why haven't you mentioned it to me?"

Bai Liuyi's face did not change significantly, he just shook his head expressionlessly, and replied to Yuan Fei: "I chased after him at the time, but because I was poisoned, I didn't go far and passed out, and then I broke away from the team and looked for the World Destroyer by myself." ”

She replied coldly that Yuan Fei didn't find anything abnormal, and her attitude was not one of questioning and probing with some purpose, just an ordinary inquiry, and she said with a bow: " There is really no need for the intrigue team to stay together, and I don't mean anything else when I ask you this question, it's just that not long ago, Gu Dan Academy sent someone to Wanyu City, and then asked the college students who joined forces to join the plan to round up the World Destroyer before the major academies about the matter, to find justice for the two dead genius students, these months have passed and it has not been revealed, but everyone estimates that it was done by the World Destroyer before his death.

As for you...... Your identity is kept secret, they don't know that it was you who went to Wanyu City, they are just communicating with our school, so you don't have to worry about anything, things have nothing to do with you, and the void door will not let these troubles fall on you, so just practice with peace of mind. ”

Bai Liuyi bowed his head expressionlessly and said, "Thank you, teacher." ”

Yuan Fei took another bite of the chicken breast, smiled and praised: "This chicken is really delicious, you will bake such chicken for the teacher again in the future, how about reducing the difficulty for you?"

The unnaturalness in Han Xu's heart still hasn't disappeared, but in Wanyu City, he has already perfected his disguise skills, his face is still full of smiles, and he scratched his head a little embarrassedly, "If the teacher wants to eat, I'll get it for you next time." ”

Bai Liuyi and Han Xu had talked about her going to Wanyu City to besiege her before, she investigated her father's traces, she didn't tell anyone, and her personality also caused her not to tell others, so even the Void Gate thought that she went to Wanyu City to find the Lord of the World, just to get extra points for the summer mission. And out of the protection of the students, this mysterious university has done the greatest protection of Bai Liuyi's information, and has carried out a secret organization, so that the students of the rest of the colleges and universities can join forces to compete, which has increased the difficulty and confrontation of Bai Liuyi's task, such a sense of mystery makes the outside world now not know who the students of the Xumen who participated in the siege at that time were.

However, this kind of conversation suddenly broke out here, and it undoubtedly caused a lot of excitement for Han Xu, who had already immersed himself in a stable cultivation inside the Void Gate and was used to comforting his heart.

"After eating, I started practicing, today is not your martial arts class, but since you are here, then I will simply take the class, and the teacher will not charge you for the supplementary lesson. Yuan Fei stood up and patted the snow on his body, and suddenly said with a serious expression, "It's just chicken, but there is no way to buy it as a teacher." ”

......

Freezing three feet is not a day's cold, and any cultivation cannot be achieved overnight.

As the days passed by one by one, the day when the two prisoners would be handed over by the Federation's Void Gate was getting closer and closer, and Han Xu's mind began to slowly become heavy.

Whether it is Peng Dan, Liu Ye, or Han Xu, he has no good feelings at all, but he has a stronger resistance to the royal family, so he has to stand in line in this matter, and is more inclined to stand on Peng Dan's side.

In fact, he is very reluctant to do anything that violates the rules now that he has successfully buried his identity, so that his eyes fall on him, so as to be exposed, but Mo Mianbing and Gong Conglong's request made him really reluctant to refuse, especially since the two of them have provided a lot of help to him at different levels for him to be able to successfully practice in the Void Gate today, and without Gong Conglong, in the crater of the Xuanka world, he may not be able to survive.

Tonight, the snow is boundless, and it is a good time to bury traces, so it is also the day when Mo Mianbing agreed to go to the Liuye dormitory together.

After finishing the practice in the evening, the group sneaked into the mountains to gather.

"The teacher doesn't live in the core area, and the ordinary professors and teachers in the core area don't have the permission to move in, he lives in an annex assigned to him by the Xumen, which is in the east third district of the Xumen, and there are no other dormitory buildings or other courtyards around, so we can rest assured there, the college has blocked it out, but I used my authority to secretly check, and there is actually no defense. ”

The three of them were wearing blue civilian clothes, which was not easy to reveal in the dark night, although there was also monitoring in the void door, but there were also dead ends, and Mo Mengbing, who was already familiar with all this, walked in front and led the way.

They secretly investigated the case, although it was not a big crime to be discovered, but if the teachers knew, they would definitely stop them, Gong Conglong and Mo Mianbing's sensitive identities, the academy and the federation would not allow them to participate in the case as investigators.

In a short time they came to a low hillside, surrounded by a lofty hill, which seemed weak and helpless, and a two-story ordinary house was built under it.

The three of them walked along a winding path and arrived at this small courtyard.

Mo Mengbing turned on the flashlight that was frozen by the cold, and a bright light pierced the snowy night, and in the contrast between light and darkness, the surrounding mountains stood like hideous giants around them, giving the three of them a lot of pressure, and the expressions of the three of them were extremely solemn.

A cordon was set up around the house, and by the light of the flashlight, Han continued to look further down the hillside, only to see that there was a frozen stream below, and the head of the stream was a cliff behind it.

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