The walls of Qingya City are not gated, and communication with the outside of the city is carried out through several well-defended underground tunnels. The length of the tunnel is about three kilometers, and although there are lights inside, the light is dim. After the car drove out of the tunnel, Ling Li noticed that the trees on both sides of the road were very tall, and even the ears of wheat in the wheat field were twice as large as he remembered.

Within more than 20 kilometers of the safe zone around the outer city wall of Qingya City, there are patches of reclaimed fields, and some farmers can be seen working in the fields. Scattered among the fields were a number of pioneer sheltered villages, and at intervals there was a bunker-like military installation to provide security for the civilians who toiled. Outside the city, humans can be attacked by dangerous creatures at any time.

Before entering the city, Ling Li's family lived in this kind of pioneer village outside the city.

Although I have learned the knowledge of the growth of plants after the cataclysm in books, and I have seen many pictures, I still feel very shocked in my heart when I see the real thing with my own eyes......

The car had only traveled a little more than ten kilometers along the road before it stopped outside a military fort outside the city.

"Get out of the car and assemble!" Yuan Sheng's loud voice rang out outside the car.

Intimidated by the whip in the hands of "Yuan Peel", the students quickly carried their luggage after hearing the sound, jumped out of the car as soon as possible, and then found their own class, carried their bags and lined up neatly.

"Our field training camp this time is Huangyanggou in the northeast of Qingya City! The distance is 45 kilometers, and there are still more than 30 kilometers away from Huangyanggou, and everyone must walk over and march with weights, which is also one of the basic requirements of field training. Yuan Sheng said with an expression.

The distance of more than 30 kilometers is not particularly difficult for a teenager with an average weight of 20 kilograms. After all, in this world where everyone practices martial arts, everyone's physical fitness is relatively strong.

In the No. 5 Middle School, in addition to the "Yuan Papi" who led the team, there are also 12 teachers to ensure the safety of students in the wild. These teachers all have the level of intermediate martial artists or above, and there are actually five female teachers among them.

Along with the fifth middle school, there are also the seventh middle school and the ninth middle school, and the escort of nearly forty middle and high-level martial arts teachers, even in the army, it can be regarded as a very strong team.

After walking more than 10 kilometers, the team could not see the farmland and the pioneer villages and towns in front of them, and the road ended there. However, when I left the road, there was still a winding dirt road about a car wide, which seemed to have been pressed out by the pioneers' vehicles heading out into the wilderness.

Later, Ling Li learned that this was a road leading to the mining area in the mountains.

Leaving the confines of the pioneer area, there is a pristine landscape in front of you. Soon after leaving the road, a group of nearly 2,000 students entered the periphery of Daqingshan. There will still be many traces of civilization before the cataclysm, such as seeing a big black "1" on the steep mountain on one side from a distance, and when you get closer and take a closer look, it turns out to be a section of asphalt road left after the rupture before the cataclysm.

The cataclysm had a huge impact on the surface of the Chiyan Continent, and the surface of the earth's crust experienced a violent uplift and collapse process, which was also a major reason for the near-extinction of the original human race. In addition, the so-called "aura" in the air replaces oxygen, and it is strange that the creatures on the Red Flame Continent adapt quickly to the process of reiki replacing oxygen, and according to records, only a small number of human beings die because they do not adapt to the new environment.

Due to the gradual thinning of oxygen, in the early days of the cataclysm, for nearly fifty years, the surviving humans lived a primitive life of drinking blood. Later, human beings discovered a new way to ignite fire based on the fire element in the so-called "aura".

The ability to control the use of fire and the fabrication of tools is the biggest difference between humans and other species.

The wilderness is not desolate, on the contrary, the vegetation has not been damaged by humans, and under the transformation of the new "spiritual power", it has grown taller and more lush, and as far as the eye can see, the mountains on both sides of the road are full of lush and primitive scenery, and the trees are dense. This is also a good thing, the grain yield per acre of land is more than three times that of the past, which is one of the main reasons why Qingya City can feed nearly 800,000 people with less than 30 kilometers of farmland in the surrounding area.

There were no accidents along the march, and the dangerous beasts in the training area were cleared by the city guards before the students came, and such a large group of men and horses had already scared some of the beasts far away.

At first, the students still marched with laughter and laughter, but when they reached 10 kilometers, as the fatigue of their bodies increased, most of them lost the heart to speak, and only cared about burying their heads in the road, and the atmosphere of the team gradually became dull. As the weeds and woods on both sides of the road grew more and more luxuriant, the team entered the rolling hills on the outskirts of Daqing Mountain.

The physical fitness of the human beings on the Red Flame Continent was incomparable to the human beings on the blue star in their memory, and after a distance of more than thirty kilometers, these sixteen or seventeen-year-old young students walked all the way, and it only took more than three hours to complete the whole journey. Towards noon, we climbed several rolling hillsides, and in front of them was a large open valley. Between the grassy meadows, there are some woods, and a small river meanders through the valley, dividing the meadow into two.

On the hillside, about three kilometres from the entrance to the valley, is a field camp made of logs, and even a dozen or so houses made of wood.

It's just that the field camp built by the pioneers has obviously been occupied by a group of teachers and students who arrived early, and there are actually four guards outside the gate. Ling Li was surprised to find that in the hands of the four guards, it was actually the Source Energy Rifle.

Due to the drastic change in the rules of heaven and earth, the thermal weapons that still provided kinetic energy and fired warheads before the cataclysm were ineffective. Due to the low content of the fire element contained between heaven and earth, so far, humans have not discovered or synthesized chemicals that can produce deflagration.

Pre-cataclysmic thermal weapons such as guns and even missiles still exist only in the records and legends of history.

However, mankind's desire for thermal weapons has led many scientists to develop a powerful source energy cannon that uses the source energy crystal as the power. This kind of artillery relies on the kinetic energy provided by the source energy spar to fire the warhead, which is somewhat similar to the "electromagnetic cannon" on the blue star.

It is precisely because of the emergence of this source energy cannon that human beings have gradually gained a firm foothold in the competition with various powerful alien and mutated species, and returned to the surface of the planet to live and survive.

According to the principle of source artillery, human beings have gradually carried out research on miniaturization, which has derived the source energy rifle. It's just that due to the scarcity of source energy crystals and the high price, this kind of source energy rifle, which is much more powerful than the bow and crossbow, is only partially equipped in some elite troops.

"Inside are the people from Qingya No. 1 Middle School and No. 2 Middle School, all of whom are the sons and daughters of the nobles who live in the inner city." Lin Liang didn't know when he came to Ling Li's side, looked at the young boys and girls walking around the camp with envy, and whispered......