Liu Qing, who had eaten and drunk a lot, looked at the people in the carriage and felt that he couldn't hold it anymore, so he turned his head and patted the cab behind him.

Soon the three cars stopped on the side of the road, and everyone walked one after another, going down to move their muscles and bones and solve physiological problems. The captain and instructor on the side kept urging everyone to hurry up. Everyone didn't have any thoughts, and after solving their own problems, they hurried back to the car.

The car continued to start, walking on this remote road.

The Great Khing'an Mountains in Inner Mongolia is a primeval woodland, and it is also a very important woodland in China. It covers an area of 7.3 million hectares, of which 75% is covered by forests. As far as the eye can see, it is really a vast forest sea, which is very spectacular. Of course, that's when you're playing, and if you're in the middle of a mission, you can only feel a sense of despair. There are many precious tree species here, because it is located in a temperate continental climate area, and the temperature difference between day and night is large, so the trees that can survive here are good varieties that are frost and cold resistant. Among them, pine trees are the most common. These pine trees are very high in oil. Basically, it is difficult to extinguish after being ignited. Because of the hundreds of years of growth here, some trees can even grow as thick as five or six people hugging each other, once burned 10 points dangerous, after breaking, often smash and injure disaster relief personnel, even with hard hats are very dangerous.

In addition to experience in the primeval forest, what is more needed is a strong body. You may often see some adventure programs that explain how to survive in the wild, but what I want to tell you is that some knowledge of natural knowledge is useless in the primeval forest. For example, the direction of dense foliage is south. No, the leaves in the primeval forest are the same. Even if you go out of the forest from the densely vegetated side, the sun has already set, and except for the forest side, the sunset is exactly the same on the left and right. Aside from GPS, who can tell you which direction is west?

The forests are still very cold in May, and poisonous insects and other things are not common, but the mosquitoes have recovered. Here you can see many mosquitoes that you have never seen before, some yellow, some green, and even some blue. But most of these mosquitoes are so stupid that they won't bite you even if they stay on you, and you can even gently pinch their wings with your hands.

Fortunately, it's not summer, and if it's summer, it's probably not just these mosquitoes that will be the most difficult to deal with, and the army of bulls will be a nightmare for everyone.

Liu Qing went through all the things that needed to be paid attention to after arriving in the mountainous area in his mind. Then close your eyes and try to sleep to conserve your strength.

This time, two comrades will first go missing in the forest fire. Then there will be two comrades in the fire, because the fire tornado is trapped in the fire and cannot come out, the instructor, the captain, the instructor and the captain are all punished for this matter, and they are all transferred away not long after.

This time, Liu Qing wants to rewrite their fate and snatch them from the hands of death. The vehicle traveled for almost two days. In the early hours of the 28th, they arrived at the Kilometre Zero station.

Some of the troops have already been airdropped by helicopters, and what they need to do is to do a good job of cleaning up the aftermath of the vanguard and preventing the resurgence of the fire.

You must know that in the fires that broke out in the Great Khing'an Mountains, nine times out of ten were overwintering fires.

This primeval forest has been uninhabited for hundreds of years, and the leaves of the trees are constantly falling year after year. Every year new leaves cover the old leaves, and the old leaves decay into mud under the new leaves, so that, year after year, peat bogs are formed on the ground.

When a forest fire occurs, there is a high risk of spreading to forested peat bogs. However, they are potential climate bombs, with peat bogs burning and releasing carbon dioxide that has been stored for several geological epochs. When the soil starts to burn, it releases a choking smoke, and the machines in the primeval forest have no way to enter, and the only way to stop this process is to dig out the barrier by hand. At this point, the fire appears to have been extinguished, but in reality it lasts for months or years, and the fire has changed from above-ground to underground.

Underground fires burn under the ground, and there is generally no flame visible, only a small amount of smoke. This fire can burn all the way down to the upper part of the mineral layer and groundwater. Compared with the above-ground fire, the underground fire spreads very slowly, and it can only burn about a few tens of meters in a day, which gives the troops sufficient time to react.

But underground fires are not easy to extinguish. The temperature of the underground fire is very high, and the destructive power is also very strong, and after the fire, the trees are affected by the high temperature radiation and die, and a large number of fallen trees appear. Since underground fires are less affected by wind, the fire field is generally circular. Underground fires last a long time and can burn for days, months or more if no one takes care of them. Underground fires that occur in autumn. It can overwinter and continues to burn until the following spring. Therefore, it is also called wintering fire. This kind of overwintering fire can easily occur in the Great Khing'an Mountains, especially in the coniferous forests during the dry season of winter.

Even in winter, when the snow does not melt into ice, under the sun's rays, in the refraction of the ice, a large amount of light and heat is collected in the fallen leaves, and the heat accumulation will also produce fires, and the fire will not burn upwards because there is ice and snow cover on it, they will only go downward, with the help of the peat and biogas that spreads constantly. This leads to the fact that in May and June of spring every year, it is basically the high season of forest fires in the Daxing'an Mountains.

In the primeval forest, you have to be careful not only of the fire and the trees that were burned by the fire, but also of the indigenous people here.

Wild wolves and black bears, of course, the chances of encountering them are really very small, because of the fire, these animals are frightened and run away, even if the fire is extinguished, they will not come back in a short time.

Everyone took a short break at the zero kilometer stationing point, and the cooking team prepared a hot dinner for everyone, a bag of pickles and a bowl of sticky porridge per person. Then there's a particularly large piece of roast meat.

The replenishment of physical strength and energy must be put in the first place, the guy who eats is actually their kettle, and the military kettle can be easily split into two parts, one part is used to hold water, and the other part is used to hold rice.

Liu Qing put the mustard in his pocket, and then looked for the squad leader of the cooking class, and Ge Lingguang had a few bags of medicine.

He also has a lot of salt in the backpack he carries, but this thing is really not delicious, or refreshing mustard, eating it is more to his liking, although he is still worried about not enough mustard reserves, these salts are not stored in advance for themselves, but worried that this time up for too long, the cooking class with these reserves are not enough for everyone to eat, lack of water, and can endure a period of time to go to a farther place to fetch water, but if it is desalted, then there is really no strength in the body.

Sure enough, the cooking class used a lot of salt to store meat. Each class was assigned a piece of pork with a thick layer of salt, because when they got to the place, everyone was scattered to carry out their tasks. It's impossible to walk more than ten miles of mountain roads to eat, and then go back, then this day will be nothing else, just toss back and forth to eat. Therefore, when it comes to the mission location, everyone solves the problem of eating by themselves, and the cooking class will also become a combat class, fighting together with everyone in the front-line fire. At this time, each class's own reserves are particularly important. As for water, it is still easier to find in the primeval forests of the Great Khing'an Mountains, because there are more springs. Even if you can't find a spring, you can dig deeper. At a depth of about two or three meters, you will dig up perennial solid ice, which is mostly mixed with dirt. Take a random cloth and strain it, and you can make do with it, and everyone calls this water 'iced tea', but you can go for the taste.

After a short rest, the captain picked up the GPS and beckoned everyone to walk towards the fire.