What appeared in front of them now was the last hurdle and the most difficult to climb the Malaya Mountains, Mount Everest, which was 15,700 meters above sea level. The highest peak of the Malayas Mountains and the highest peak of the planet.

The reason why I chose to climb from Mount Everest is because this road has the fewest peaks to climb and the distance is the closest. As long as you climb Mount Everest, you will enter the territory of the orcs. But no human has done that yet.

Looking up at Mount Everest, the whole mountain is snow-white, as if it is a ladder connecting the heavens and the earth. "It's so majestic!" Zhang Tianqi exclaimed, "I can't see where its end is." ”

"Yes, no one has reached the top of it so far, and if we can succeed this time, we will be the first to conquer Mount Everest. Zhou Sheng said.

"So what are you waiting for, let's conquer it quickly. After speaking, Zhang Tianqi took the lead in climbing upward. Liu Yu and Zhou Sheng glanced at each other, shook their heads helplessly, and followed.

In more than ten days, they climbed many high mountains, and their experience became more and more abundant. Climb all the way up, and there is no difficulty below 7,000 meters. It took one day to climb to an altitude of almost 9,000 meters. Looking at the still towering Mount Everest, Zhou Sheng sighed: "It's really too high! It seems that one day can't be turned." ”

"It's good to be able to climb to this height so quickly, and it's not so easy to go any further. Liu Yu said, "The air above will be very thin, and the ventilator must be prepared at that time, and it will not be able to pass without sufficient oxygen to maintain it." ”

"Alright, let's rest first. You're going to have to go back tomorrow, aren't you tired? Big brother, it's time to cook, I'm already hungry. Zhang Tianqi touched his stomach, "It has all made comments." ”

Taking out the stove, Liu Yu began to cook, the stove is made of a solid fuel, only the size of a fist, which is more resistant to burning than coal. They have been gone for more than ten days, and they have only consumed one such fuel. However, this time there was a difficulty, Liu Yu lit it with a flint, and no flames came out, only a thick smoke kept churning.

"How can this be?" asked Zhang Tianqi puzzled.

"I guess there's not enough oxygen to burn. Liu Yu explained.

"I don't feel that it is difficult to breathe?" Zhang Tianqi still did not understand.

"That's because you've practiced the exercises, and your physique has increased, and you haven't felt it yet. If you go up further, you will have a reaction. Liu Yu said.

"What about today's dinner? I can't eat raw meat. Zhang Tianqi was a little anxious, "How can you climb the mountain when you're hungry?"

"Let me think about it. Liu Yu closed his eyes and kept thinking, and after a while, Liu Yu opened his eyes and said, "Now there is only one way, increase the supply of oxygen." After speaking, he took out a metal can half a meter high and twenty centimeters in diameter from the necklace. A special valve and a round dial are installed on the jar. There is a hand on the dial with some indexes on the dial and a metal hose attached to the exit of the dial. Connecting the other end of the hose to the connector at the bottom of the stove, Liu Yu turned on the switch on the jar. While carefully turning the knob on the special valve, carefully observe the position of the hands on the dial. When the hand pointed to the scale 0.2 on the dial, Liu Yu opened the valve at the stove interface. In an instant, the flames rose and burned fiercely.

"Alright, get more food this time, and we won't make a fire until we go down the mountain. When this tank of oxygen runs out, there will be no more, so we need to save some of it. With that, Liu Yu quickly took out the bacon and began to roast it.

An hour later, after making the amount needed for three people for five days, Liu Yu put away the metal cans again.

Zhou Sheng asked curiously, "How much oxygen can you hold in such a small tank?" ”

"It's filled with oxygen that has been compressed under high pressure and turned into liquid, so naturally it's packed a lot. The gas liquefies at a certain pressure, which is convenient for storage and transportation. Liu Yu explained.

After a night's rest, the three continued their journey towards the summit of Mount Everest. With an altitude of more than 10,000 meters, the mountain freezes a thick layer of ice under the floating snow. These are solid ices that have existed for an unknown number of years, hidden under the snow. If you are not careful, you will stumble and fall off the cliff.

Zhang Tianqi volunteered to explore the way ahead, only to see a rope tied to his waist and a steel drill nailed to the ice as a protective device. He carries a long rope on his back, holds a steel drill in his left hand, and holds a hammer in his right hand. Each step forward is to use a steel drill to carve a pit on the ice surface that can be used to settle down, and the ice surface is as hard as iron and slippery. Every hammer struck down with the sound of a clanging sound of gold and iron, and a shallow white mark was absent.

On the steep slope, Zhang Tianqi could only rely on ropes to hold his body on the ice, digging little by little, and then climbing a little distance with his hands and feet, and then stopped again to repeat the previous work.

After advancing for about 200 meters, Zhang Tianqi fixed one end of the long rope he was carrying, and threw the other end to Liu Yu and the others behind him. Liu Yu and Zhou Sheng stepped on the pit dug by Zhang Tianqi, pulled the rope, and climbed up cautiously. When he came to the place where Zhang Tianqi stopped, Liu Yu picked up the hammer and steel drill and went up, and then Zhou Sheng.

After repeating this progress, he reached an altitude of 11,500 meters above sea level before falling, and climbed only 2,500 meters in one day. The next day, he climbed another 2,000 meters to an altitude of 13,500 meters. At this height, the air was already extremely thin, and the three of them gasped for breath.

After resting for a while, Liu Yu said: "We can't stay here for too long, we have to turn over tonight." ”

Hearing Liu Yu say this, Zhang Tianqi was very surprised: "We have been walking for a day, and there are still more than 2,000 meters of mountain road, how can we climb over?"

"Of course, we didn't rely on two legs to go up, and the aircraft we were equipped with had never been used to prepare for the final climb over Mount Everest. I have calculated that it will take ten minutes to fly over Mount Everest to the mountains a hundred kilometers away. Liu Yu said, "With this aircraft, we can continue to fly for an hour, and we used up twelve minutes when we practiced before, adding up to twenty-two minutes." You can also have more than half an hour left to spare. ”

"Then let's fly over there. Zhang Tianqi's surname was in a hurry, and he immediately took out the aircraft and prepared to put it on.

"Don't worry. Liu Yu grabbed Zhang Tianqi and said, "Take out the respirator and put it on, and then the oxygen shortage on it is so bad that people will suffocate if they don't wear a respirator." ”

Zhang Tianqi took out the respirator again, cleaned it up in three or two times, and urged again and again: "Hurry up, what is there to be nostalgic for in this kind of ghost place." I don't want to stay any longer. ”

Liu Yu couldn't help but smile when he heard Zhang Tianqi's words: "Okay, okay, let's leave." He and Zhou Sheng took out their equipment and quickly put them on. After getting dressed, the three of them checked each other again as requested.

"Let's go. Liu Yu gave an order, and the three aircraft ignited at the same time and flew into the air. In the process of ascent, Liu Yu gave the coordinates of the landing site and instructed him to fly above the peak as much as possible after flying over Mount Everest, so as not to hit the hillside because of the dark vision and cause a tragedy.

Pushing the longitudinal stick, the three aircraft disappeared into the night sky like meteors, leaving only a loud roar echoing through the valley.

With the help of the flying machine, the three of them suddenly relaxed. In an instant, it flew north over the summit of Mount Everest. The northern slope of Mount Everest is seen from the sky by the bright moonlight, which is even steeper, almost vertical, covered with thick ice armor that shimmers pale blue in the moonlight.

Looking at this steep terrain, Zhou Sheng sighed with emotion: "This is really not something that can be crossed by manpower. No wonder the Orcs can only attack us from the east. ”

Continuing to fly north, the mountain gradually lowers. The three of them lowered their altitude and flew forward along the gap between the peaks, and the rolling mountains seemed to stretch north as if there was no end. Flying between the mountains, don't dare to drive too fast, lest you have time to dodge the oncoming peaks.

Zhang Tianqi flew in front of the aircraft, guiding the route for the two people behind. Ten minutes passed quickly, and the chosen landing site was getting closer and closer. Liu Yu gave an order to Zhang Tianqi: "You are about to arrive at the designated place, you start to slow down and reduce the altitude now, and prepare for landing." When we reach the ground, we will be on guard and cover our landing. ”

"Yes," Zhang Tianqi agreed, slowed down and began to approach the ground.

Liu Yu continued to order: "Zhou Sheng, let's cover Xiao Qi first, and then we will land after he lands safely." ”

"Yes" Zhou Sheng also agreed and began to carry out his task.

While stumbling down the aircraft, he vigilantly observed his surroundings. Now that you've entered the territory of the orcs, no one knows what kind of danger you'll encounter next, so it's always right to be careful.

Liu Yu and Zhou Sheng slowly circled in the air, patrolling some corners of the vicinity of Zhang Tianqi's landing site that might be hiding creatures. Zhou Sheng even put on an infrared night vision device, took out a sniper rifle, and carefully monitored.

Zhang Tianqi landed down little by little, and finally landed smoothly on the ground. As soon as his two feet touched the ground, Zhang Tianqi quickly took out his assault rifle and glanced around. After seeing the calm around him, Zhang Tianqi reported to Liu Yu: "Everything is normal here, you can land." ”

Before the words fell, Zhang Tianqi felt a strange wind rushing from behind him. didn't dare to turn back, he rushed out directly to the left front, his body turned half to the right, and a shuttle of bullets immediately shot out. At the same time, only a loud roar was heard, followed by the sound of a heavy object falling to the ground.

When Zhang Tianqi turned around, he couldn't help but gasp. A huge black bear was lying on its back in a pool of blood, its limbs were still twitching, and some bullet holes could be seen spraying blood outward, and the fatal shot was in the head. There was a fist-sized blood hole on his forehead, and the red and white liquid stained his face, apparently a wound made by Zhou Sheng with an armor-piercing bullet.

"Brother Zhou, thank you. Zhang Tianqi said gratefully.

"Brother, don't be so polite. Zhou Sheng waved his hand at Zhang Tianqi in the sky, "There should be no danger, you be careful, we are going to land too." ”

When Liu Yu and Zhou Sheng landed at the same time, the three of them packed up their equipment and took out their respective weapons, and came to the side of the black bear that was killed and took a closer look. This is an adult black bear, about four meters long, covered with thick black hair, more than two inches long fangs in its mouth flashing with a terrifying cold light, thick and powerful limbs stretching out of the claws of inches.

Looking at this black bear up close, Zhang Tianqi had no doubt that when these giant palms slapped directly on his body, he would definitely die. couldn't help but be a little afraid, and secretly congratulated himself that his reaction was fast enough, and Zhou Sheng's rescue was timely enough. Zhang Tianqi said a little strangely: "How can it be so coincidental that there is such a black bear hiding in the place where we are going to land, and I was attacked by it as soon as I landed?"

Zhou Sheng looked at it repeatedly for a while and said, "This should be a guardian beast trained by the beast clan, specially guarding this mountain forest, maybe attracted by the fire light emitted by our flying machine." Since there is a guardian beast, it means that there is an orc army stationed here, and we must leave quickly. This black bear is full of treasures, you help me guard it, and I will deal with it immediately. After saying that, he pulled out the dagger and quickly cut it.

After a while, a bear skin, four bear paws, and a bear bile were included in Zhou Sheng's space ring. Cutting some edible bear meat and offal, Zhou Sheng wiped his hands with satisfaction: "Okay, we can go." After disposing of some of the remaining bones and flesh of the black bear, leaving no trace, the three of them disappeared into the night.

Early the next morning, a small group of orc soldiers arrived. "It's strange, the aura of the big black disappeared here, where did it go? Could it be that a human smuggled in and killed it. A small team leader-like orc soldier sniffed his nose vigorously and said suspiciously.

"Maybe it's gone somewhere to play, how can humans smuggle it from here. Besides, it's impossible to kill Daikoku without leaving a trace. Captain, are you crazy if you want to make meritorious contributions!" a soldier scoffed. Hearing his words, a small group of orc soldiers all burst into laughter.

"What are you laughing at!" said the team leader angrily: "We still have a few mountains that we haven't checked, and you guys will look good when we go back after the inspection." ”