In the confined space, the sound of breathing fluctuates constantly, low and viscous, like a broken bellows.

In the dark, Bi Fang and Attenborough curled up to rest, slowing down the consumption of energy and calories, only Tenzin continued to dig, digging along the rope, and his hands were almost numb from the cold.

It's not that Bi Fang is hypocritical, he still has to maintain the whole process of anaerobic completion of the task when the team is at stake, the reason is that he is now in pain almost all over his body, and being able to dig out Tenzin has squeezed out his last trace of strength.

If you choose to take oxygen at this time, you will not be able to complete the task or save people.

He is really worthy of being a warrior of the third pole and the darling of the mountains.

Feeling the figure swaying in the dark, Bi Fang couldn't stop thinking.

The nickname that Sherpas have a third lobe dedicated to mountaineering is not unfounded, but genetically determines that they can adapt to the alpine environment better than ordinary people; Their blood pressure is very low, which ensures that the blood supply to the brain is sufficient and the muscles are elastic and strong; Compared to their legs, their torsos are longer to ensure a stable center of gravity in the rugged mountains.

"Mr. Bi, Mr. Attenborough?"

"Yes."

The head is getting dizzy.

No matter how hard the alveoli dilate, the oxygen is never filtered, the blood flow becomes slower and slower, and the hemoglobin tries its best to capture the oxygen molecules, which is always in vain.

The silent darkness made people panic, and at this moment, Bi Fang couldn't suppress his panic, this was not fear, but the physiological behavior brought about by lack of oxygen, which was difficult to overcome with simple mental strength.

If only there was light.

At the moment when he was hit by the wind and snow, except for the backpack fixed on his back, he, sir, Tenzin's headlamp had already been washed out, and he didn't know where it fell, if there was a lamp at this time, it would not be like now.

As his lungs heaved, he breathed heavily, and the oxygen in the air was further extracted, in contrast to the increase in carbon dioxide concentrations.

Bi Fang, who regained his composure, made a preliminary diagnosis for himself, the arm was completely out of force, the muscles were spasmodic, stiff, or slightly strained, the strain was troublesome, and it was not easy to get better in a short time, hoping that it was just a simple detachment.

If you don't go out again, maybe dioxide poisoning can kill you.

Carbon monoxide isn't the only thing that can be poisoned, carbon dioxide can.

Under normal circumstances, the amount of carbon dioxide in the exhaled air is 4.2%, and the partial pressure of carbon dioxide in the blood is higher than that of carbon dioxide in the alveoli.

However, once the concentration of carbon dioxide in the environment increases, the concentration in the alveoli will also rise, and the pH will change drastically, which will stimulate the respiratory center, and eventually lead to paralysis of the respiratory center, causing the body to hypoxic asphyxia.

"Damn, how did you get an avalanche?"

Bi Fang threw his head up and smashed it on the snow wall, unable to figure it out in his heart.

Perhaps sensing the change in atmosphere, Tenzin whispered: "Mr. Bi, Mr. Attenborough, are you all right?" ”

This was Tenzin's thirteenth question, and he asked almost every half minute, and just as Bi Fang wanted to answer as before, an indescribable sense of comfort appeared over his body, and every cell cheered, as if ......

The oxygen concentration has been increased!

Bi Fang sat up abruptly and expanded his lungs again, yes, yes, the oxygen concentration in the air increased! Not a delusion!

Going to dig it out?

No, Tenzin dug along the rope, and someone was not buried?

Impossible?

With doubts in his heart, Bi Fang followed the rope to Tenzin's side: "Tenzin, keep digging, hurry, keep digging!" ”

Tenzin looked confused, but the movement of his hand did not stop, and he continued to dig, and large chunks of snow were thrown.

Digging and digging, Bi Fang keenly noticed that the oxygen concentration in the air seemed to have risen a little.

"What's wrong, Mr. Bi?"

Tenzin was inexplicable, and for some reason Bi Fang suddenly reacted.

Bi Fang didn't answer, he propped his hands on the snow in front of him, and pushed with both hands.

Suddenly, the layer of snow in front of everyone collapsed suddenly, a large amount of snow and dust splashed, the air circulation rolled up a breeze, and fresh air rushed in.

Dig through!?

Tenzing and the semi-comatose Attenborough's eyes widened, and although they could not see anything in the darkness, they were keenly aware of the air circulation.

It's out!?

No.

Bi Fang looked around at the pitch black in front of him, the sky of Mount Everest was very clear, if he went out, it would never be as dark as now, and he couldn't do anything.

This is an internal "vacuum".

Bi Fang himself recalled the scene when the avalanche occurred, and gradually simulated the scene at that time.

With a sigh of relief, the dizziness caused by the lack of oxygen was relieved, and Bi Fang explained: "The avalanche quickly submerged everything, but the shape of the Eagle Head Ice Slope is so unique that the torrent washes away a part of the space in the rocks. ”

Just like an airplane crashing into the sea, while being quickly enveloped by the sea, the air in the cabin will be squeezed to the top of the cabin and cannot flow out, forming a breathable area.

The eagle's head of the eagle head ice wave soared into the sky, but its back was facing the direction of the avalanche, and the torrent washed down, it was really like an eagle protecting the last living space under the avalanche!

Just as Attenborough and Bifang were feeling the incredulity, Tenzin's shouts rang out in the darkness.

"Mr. Bi, there are others here! Lama Chin! Lama Chin! It is the manifestation of the mountain god, it is the manifestation of the mountain god! Lama Chin! Lama Chin! ”

Someone?

Bi Fang stood up strongly, and suddenly, a dazzling light lit up.

Bi Fang hurriedly covered his eyes.

Tenzin, who picked up the headlamp, also realized that he was doing something wrong and quickly suppressed the light.

Finally getting used to the dazzling headlights, Bi Fang slowly opened his eyes, and in the small space, Yao Jun, Rob, and Jarrett were all here!

"It's all right, everyone is okay!"

Tenzin was obviously a little excited, but the next moment, his mood was much lower, "It's a pity for Uncle Holt and Uncle Leza, they shouldn't have run away, I don't know how it is now." ”

Attenborough comforted the young man: "It's all instinctive reactions, there is no right or wrong, don't care too much, the mountain gods will bless them." ”

Bi Fang coughed twice, came to Yao Jun and the others, and checked them one by one.

They were still breathing, and they were breathing normally, except for a brief moment in a coma.

Taking an oxygen cylinder out of their backpack and bringing it to them, Bi Fang rummaged through Rob's backpack again, successfully finding a small radio.

Call.

Bi Fang, who found this thing, breathed a sigh of relief.

Fortunately, it is still there, and with this thing, even if they can't dig it out, they can rest assured that they can wait for rescue.