It's over like this, everyone is ready to rest, this is a camp at an altitude of 5900 meters, because a large number of materials are carried by robot guides, so the three of them actually didn't spend much physical strength, and there was a little strength to talk and laugh.

A full moon hung in the sky, looming under the cover of clouds. Zhang Yuan breathed in the cool and thin air on the top of the mountain, and suddenly found that he was less and less reminiscent of the former Kunlun Mountain world.

This cherry blossom world...... Well, it's good - if you're used to these laid-back days. It is difficult for one person to completely change the entire era, there is no such thing as perfection in the world, and since you are here, you should spend this life well.

I don't know for what reason, the average life expectancy of humans here can only reach 110 years, there is not much life extension technology, and there is no so-called hibernation technology.

Human life is only once, and how to spend it more meaningfully is a complex philosophical question.

"It's hard to explain how to define 'meaning'."

In such a daze, Zhang Yuan fell asleep and made an even breathing sound.

When I woke up the next day, I saw Wang Nana's smiling face when I opened my eyes, this girl who was a few days younger than him was always so energetic.

"Good morning!" Wang Nana said hello.

"Good morning!" Zhang Yuan responded.

It's Ma Mingtao, who doesn't seem to have slept well, and he is covered and taking oxygen. His chest slumped together, and he was almost out of breath.

"Spicy chicken!" Wang Nana scoffed.

"Get out! Wait a minute, don't let me carry you! Ma Mingtao squinted his eyes, and with the help of a large amount of oxygen, he quickly eased his breath.

"If you go away, you have to carry it! Those who can't climb the mountain are pigs! ”

"Okay then......"

Zhang Yuan squinted his eyes, enjoying this family mode of equality very much, "Talk less, save some effort, I won't carry it when the time comes, tell her to carry it!" ”

He pointed to a green-eyed robot girl.

The whole process of climbing Mount Everest takes a total of 4 days.

Camp 1 is to go to the Sicum Cirque and the physical "supply depot" before Camp 2, and then to Camp 3, Camp 4.

In the past, mountaineering teams would usually find Tibetan guides and carry supplies all the way to Camp 4, which is 7,950 meters above sea level.

But now there is no need, the robot guide has the strength, carries a lot of oxygen and various warm equipment, undoubtedly reduces the difficulty of climbing.

The next Sikum cirque is in a "U" shape, like a large valley covered with ice, which is the boundary between Mount Everest, Lhotse and Mount Nubtsze.

Mount Everest is located in the north, and from there you will find Lhotse and Mount Nubhutse due south. The Sicum cirque is flat, but it's still dangerous.

"First of all, the difficult high temperatures, in this highland above 6,000 meters above sea level, because of the "high wall" of ice and snow on all sides, the temperature of the plateau can easily reach 37 degrees Celsius once the sunlight is reflected, followed by the hypoxia reaction, and the risk of physical exhaustion. ”

"Do you know what the climbers of the past have seen the most here?" The robot guide is a young and lively girl who can still talk at an altitude of 7,000 meters.

However, Zhang Yuan felt that he was out of breath, at this height, the oxygen content was only one-third of that under normal circumstances, which was definitely a huge test of body and mind.

"What is it?" Ma Mingtao asked slowly, "I feel like I'm going to die, and I really want to go home." ”

“…… It's a human corpse! The tour guide explained to herself: "In the past, climbers had no strength, lack of oxygen, or encountered sudden changes in the climate, so they suddenly collapsed and died silently. Their companions, on the other hand, did not have enough strength to carry a corpse down the mountain, so they could only throw it in the snow. ”

"These corpses have become ice sculptures that do not decay for 10,000 years. So much so that with the accumulation of time, there are more and more corpses on Mount Everest, which has become a kind of ecological pollution. ”

Zhang Yuan shivered all over, feeling like listening to a horror story. He wiped the sweat from his face, looked around, and did not see the so-called corpse.

The tour guide girl said again: "...... In the past, almost every mountaineering team that climbed Mount Everest had Sherpa guides, a special ethnic group in the high-altitude mountains of the southern Himalayas with a natural ability to climb mountains. There were times when their job was to carry a corpse down ......"

"Of course, it's a money......"

The next thing is of course simple, with the progress of the times, the Sherpas also live a prosperous life, and there is no need to work for money.

The corpses were all cleaned up by the robots, and these poor explorers were buried for thousands of years and finally returned to their roots.

In the end, people even forgot the names of these explorers.

"It's not worth losing your life because of mountaineering, is it to prove the courage of humanity?" This question has been haunting Zhang Yuan's heart.

Sometimes when he can't breathe, he will regret it like Ma Mingtao, which is the instinctive human desire to seek advantages and avoid disadvantages, and he wants to escape this difficulty.

There is also a related small city at the foot of the mountain, and the social system is similar, but the cultural aspect is very different.

Mountaineering, in this city, is a belief of the people.

I also met several mountaineering teams along the way, and when they passed by, they greeted each other very kindly and even asked if they needed help.

The robot tour guide in front gave Zhang Yuan and the three of them enough security, otherwise it would be quite difficult to rely on them.

The official summit starts in the middle of the night, starting from Camp 4, starting from the climb of the cliff on the south slope of Mount Everest, reaching the staircase at an altitude of 8,384 meters, and then turning to the west side of the peak, through which you can launch the final climb to the south slope of the roof of the world.

Zhang Yuan felt that he was out of breath, and every few steps, he had to stop to take oxygen, and this kind of climbing had become a pain. The mild symptoms of altitude sickness all came up, vomiting, diarrhea, dizziness, he felt that his eyes were full of gold stars, and he could faint at any time.

If you do faint, you may lose your life directly.

It is also the most dangerous place, and climbers who fall here abound.

And Ma Mingtao and Wang Nana are also ugly and terrible, Wang Nana, who has always been lively, has long stopped talking, but her face is pale, and she tries her best to preserve her physical strength. Although the robot guide helped her a lot, it was still a little overwhelming.

"I regret it inexplicably, people are really fragile and want to go home." Taking advantage of the last rest, Ma Mingtao sighed quietly.

"Yes, once you are in pain, you will regret it."

Zhang Yuan smiled and said: "Then, you reflexively went down the mountain, and after you were comfortable, you regretted not going up the mountain." This remorse can last for decades, or even a lifetime. ”

"No, you'd be wrong." The tour guide girl said: "Knowing your limits is a wise choice. If everyone had the courage to go down the mountain, the death toll would not be so high. This girl may have reached her limit, so it's better to take a little oxygen first. ”