In the test chamber attached to the Basic Physics Laboratory, Veneto, wearing a tight-fitting diving suit, covered with an oxygen mask on his mouth and nose, curled up in a ball of shame with his knees huddled in shame, floating in the solution of the deep-sea simulation module.

"I'll start at 10 atmospheres and simulate the speed pressurization of a free dive. Your indicators are being monitored, if you feel unwell, don't panic, the alarm in the left hand is a pause order, and the alarm in the right hand is a rescue order. I see? Zhuang Yan patted the glass wall and repeated.

Veneto looked at him and blinked, signaling that he understood. The slender eyelashes were like elegant little fans in the water, and when she closed her red pupils, she was pitiful.

Zhuang Yan This did not react to Veneto's beauty, and he continued to shoot the glass wall until the girl opened her eyes impatiently: "Eye contact, look at me here." ”

Veneto blushed and nodded, looking at Zhuang Yan's tie dodgingly, his shy eyelashes fluttering.

Zhuang Yan began to pressurize the hyperbaric chamber to simulate the pressure change of freediving to 170 meters. He was preoccupied with two things, watching Veneto's movements intently, and he was afraid to even blink.

Miss Veneto under the water bit her lip and secretly glanced at him, and saw Zhuang Yan's burning eyes staring all the time, and quickly drifted away. Seeing that Veneto still had time to look around, Zhuang Yan calmed down a little and continued to pressurize.

Twenty atmospheres.

Veneto frowned slightly, as if he was having trouble breathing. But the order was still not pressed.

Twenty-one atmospheres.

Twenty-two atmospheres.

The girl struggled, panicked, slapped the bulkhead hard, and then hastily pressed the stop button.

After more than fifteen atmospheres, Zhuang Yan entered a state of full concentration, because this has reached the limit of a professional diver, if you freely dive to this depth, the human heart will be clutched to the size of a plum, and only a specially trained person can reduce the heart rate to adapt to the high pressure.

So when he saw the girl start struggling, he knew that the stubborn Veneto had reached his limit.

Zhuang Yan began to decompress at the first time, slowly reducing the pressure in the hyperbaric chamber at a constant speed. He walked on thin ice, and at the same time involuntarily approached the hyperbaric chamber, his eyes fixed, and he said slowly with his lips:

"Don't panic, you're doing a great job. Decompression. ”

Veneto shook his head in pain, his short silver hair like a beautiful anemone, gracefully floating in the water. She patted the bulkhead gently, as if begging for help.

Zhuang Yan tried to comfort her: "Don't panic, you must take your time to reduce pressure, otherwise the nitrogen dissolved in the internal environment and tissues will ......"

Then Veneto clenched his wrist sadly. She closed her eyes in pain, shook her head desperately, bubbles gushing out rapidly, and then her beautiful eyes suddenly opened, looking at Zhuang Yan pleadingly, and her red eyes were panicked fear and pitiful trust.

Zhuang Yan suddenly saw that the back of Veneto's hand revealed a marble-like black and white patchwork.

Pale skin is due to tissue ischemia. The skin is bruised because of venous congestion.

Because the bubbles embolize the blood vessels in the skin, ischemia and bruising occur at the same time, forming marble markings that are pale and bruised.

During pressurization, Veneto inhales a mixture of compressed air to maintain a balance between the internal and external air pressure. Her ability to capture oxygen in her body is far beyond that of ordinary people, so no oxygen precipitation occurs when she decompresses, but the compressed high-pressure nitrogen has long since dissolved into her connective tissue and nerve sheath. During the decompression, the high-pressure nitrogen dissolved in the tissues found that the external pressure dropped sharply, and immediately turned into bubbles and precipitated out one after another. Compression of nerve sheaths. Blockage of microvessels.

So Veneto was in pain. The skin is itchy like a bite, and the nerves are sensitive like a cut.

This is Zhuang Yan's fault, he neglected the possibility of diving decompression sickness.

Zhuang Yan was paralyzed, which made him extremely remorseful, but there were objective reasons. Because Veneto performed well in the vacuum tolerance test, the internal environment was solid at zero atmosphere, and the stability was amazing, not even a single bubble came out. This made Zhuang Yan make a general mistake: he believed that Zhan Ji's circulatory system had precise pressure monitoring capabilities and a pressure negative feedback control system. To put it simply, he thought that pressure was not a problem for Zhan Ji.

Indeed, the oxygen in Veneto's veins was imprisoned like a prisoner in a prison by the iron-containing substances in his blood, and not a single bubble could escape.

However, it was high-pressure nitrogen that had just been inhaled. They fall from the sky like alien species, have no natural predators, no one to govern, so as soon as the pressure is light, they begin to do evil, causing diving decompression sickness.

When Zhuang Yan saw the marble markings, everything was clear in an instant. He resolutely stopped decompressing and began to pressurize instead.

Eighteen atmospheres.

Nineteen atmospheres.

Veneto's symptoms eased, and he mechanically rubbed his little arm that had been tingling and itching, and looked gratefully at Zhuang Yan outside.

But this simple and grateful greeting made Zhuang Yan feel like a cut. Obviously, he was the one who cheated the girl, and then the girl who was in the dark still had a look of "benefactor!" He looked at him with a look that made his conscience whipped ten thousand times.

Zhuang Yan realized that the constant pressure system in Veneto's body had no effect on the inhaled high-pressure nitrogen, and he could only greatly reduce the decompression speed, so that the small amount of nitrogen precipitated could be slowly released into the bloodstream and excreted with the systemic circulation, so as to avoid decompression sickness.

And it's going to be a long process.

He struggled to put on a smile and wrote the data down in a notebook and pasted it on the glass wall for Veneto to see:

"With a free dive of two hundred and twenty meters, you've broken the human limit record again. It's great. ”

Miss Veneto in the hyperbaric chamber pursed her lips and smiled, her beautiful eyes drifted away, ignoring him, with a disdainful look of "this is nothing to worry about". The supple silver hair swayed gently in the water with this proud twist of the head, which was beautiful.

Zhuang Yan decided to be a good escort. After all, he poked out all this mess.

He continued: "It's overkill to ask you to fly a plane. You should be an astronaut. You are a natural astronaut. Your qualities are a shame on humanity. ”

Miss Veneto spitted bubbles proudly and wrote on the bulkhead:

It was meant to be!

Zhuang Yan suddenly ignored her.

Zhuang Yan and Veneto chatted intermittently. Taste for smoking. Favorite clothes. casually chatted about the superficial intersection.

When the decompression progress reached fifteen atmospheres, the door suddenly opened, and Song Dan stepped into the test cabin with his hands in the pockets of his white coat, and his first sentence was to apologize:

"Wei Xu made a big fuss. I spoke to him, and he promised not to interfere with your work anymore in principle. ”

Veneto happily waved to Song Dan, she had a good impression of her beautiful scientist sister.

Song Dan smiled politely back, walked to Zhuang Yan's side, put his head over to look at the data in his hand, and immediately raised his eyebrows and exclaimed: "Ah! The depth has reached 220 meters? Miss Veneto is so amazing that I didn't expect it! ”

Miss Veneto was extremely useful, holding her heart and saying that she was so happy, so happy.

Zhuang Yan couldn't stand the expression between the women, frowned and said, "The liquid life support device of the aerospace fighter may not be suitable for her. Her blood oxygen partial pressure is higher than air, so she can hold her breath for up to twenty minutes. But it proves that the mechanism by which her lungs complete gas exchange is different from that of humans, and if she is unable to ingest the dissolved oxygen in the liquid, then the entire life support system will have to be overturned and redone. ”

Veneto vaguely heard Zhuang Yan's suspicions, she was not happy, "bang" knocked on the glass wall, and her eyes were firmly gestured to Song Dan.

"She's going to try." Song Dan said.

Zhuang Yan knew that Veneto was reckless, just like she gritted her teeth and held on to 22 atmospheres before asking for help. But he had no reason to stop it, so he had to bow his head and record a line on the form, shrug his shoulders and say, "I don't object." However, this test is scheduled after the acceleration tolerance test. ”

Hearing the word acceleration, Veneto's pretty face turned white again, and he honestly didn't move.

"Okay, I'll arrange it. When will I be able to enter the field test drive of the fighter? "Song Dan cares about this.

Zhuang Yan must refuse: "The possibility of a test drive does not rule out zero." I won't know until the comprehensive parameters come out. At least three days. ”

Song Dan was so anxious that he paced around twice irritably in the cramped test cabin, and said, "Two days." ”

Zhuang Yan glanced at Veneto. He was afraid that she would not be able to withstand the high-intensity work.

Unexpectedly, Veneto smiled and stretched out a V gesture in the water, indicating that it was no problem, and my sister took the job.

Song Dan was overjoyed, couldn't help but bite his lip with a smile, and looked at Zhuang Yan innocently shrugged his shoulders and spread his hands, meaning you look at you, how refreshing the girls are, learn from others!

Zhuang Yan didn't have a problem with these two girls, covered his eyes and compromised: "It's barely okay for two days." ”

Song Danxi patted Zhuang Yan's shoulder diligently, and said with a smile of ambition: "Then I'll leave it to you, if you can't get the result tomorrow, you will be punished for eating mustard." Then she turned her head and walked away, and as her short hair was thrown in the air, Zhuang Yan saw her carefully selected diamond earrings arc mischievously on her sparkling earlobes.

Song Dan's shadow disappeared outside the hatch, forgetting to close the door as usual. Zhuang Yan walked to close the hatch, but when he turned around, he saw Veneto looking at himself with a smile, as if a human was watching a tiger walk outside the cage.

Zhuang Yan didn't understand what this meant.

"Do you like her?" Veneto asked bluntly.

"I like it." Zhuang Yan nodded.

"Which one likes?" Veneto's gossip soul lit up with a bang.

Zhuang Yan showed a rare serious smile, and his fingers lightly wrote letters on the glass wall:

“BOTH。”