"Unfortunately, a simple forward-swept wing model does not have a high stealth effect, and if you add a variable forward-swept wing design, the technology and structure are too complicated. Moreover, coupled with the difficulties of limited materials and mainstream air combat ideas, it is too difficult for the forward-swept wing model to be practically applied to the fighter...... Forget it, don't think about these for the time being, 20 days of foreign vacation, go to Spring City to find him first, if you can meet, stay for a while, and then go to some famous tourist attractions to visit and relax. ”

Zuo Xue, who returned to the independent single bedroom to clean up, looked calm, carried a backpack on his body, and all the items such as confidential mobile phones, bank cards, ID cards, active duty officer ID cards and exit approval forms were all prepared, and he was holding a third-class merit medal in his right hand, and he was silently thinking about the topic of the recent research paper in his mind, and halfway through it, signs appeared inexplicably in his heart, he felt something, his thoughts were interrupted, he shook his head, and he had to throw away the complicated and boring academic ideas and empty his mind.

As the teacher said, when it's time to relax, you need to be completely relaxed.

A series of airfoil and aerodynamic layout research topics such as forward-swept wing models have been put aside for the time being, and at present, the most important thing is the 20-day external holiday.

In the whole vacation plan, Zuo Xue has only one direction - to go to the Northern Spring City to find Zhou Hai, who has not replied for half a year.

"It's already ten o'clock, it's too late today, I'll go to Huanghua Airport tomorrow morning to see if there is a flight to Spring City, it's been 2 hours, what will this surprise that even the tutor doesn't know ......will be?"

The breeze caressed and blew away some scattered green silk, Zuo Xue, who had made a preliminary holiday plan in his heart, thought while walking, came to the intersection where the sidewalk connects to the main road, turned left to bypass the corner of the road, walked on the main road, and looked at the main entrance of the school.

At this moment, the picture outside the school gate suddenly came into view.

Seeing this scene, seeing the straight figure and the familiar and dignified face, Zuo Xue was stunned in place, as if struck by lightning, and his mind was blank.

Absence!

Sluggish!

And a hint of disbelief!

"Ding!"

In the slender right hand, the third-class merit medal, which had always been crucial, slipped weakly and fell to the clean and tidy concrete floor, with a crisp sound.

The August 1st logo is eye-catching, the delicate surface of the medal body refracts light, and the whole medal lies quietly on the ground.

The red glow near the evening shrouded Zuo Xue, shrouded the medal, and shrouded the figure outside the school gate.

Silent.

Serenity.

At this moment, time seems to freeze.

Zuo Xue inside the school gate was stunned in place, and Zhou Haijun outside the school gate stood tall, and the eyes of the two seemed to look at each other through a space of tens of meters, knowing the emotions in each other's hearts.

After being stunned in place for three full seconds, Zuo Xue came back to her senses, regained her composure and sanity, her bright and clear eyes, penetrating a distance of dozens of meters, looking at the figure outside the school gate, bowing her head and bending over, reaching out to pick up the military merit medal that fell to the ground.

Qingsi was a little scattered, and after lowering his head and picking up the love token sent by the figure outside the school gate on the ground, when he looked up, the corners of his mouth bent, and a smile appeared on his plain face.

The posture is upright, and the heroism and softness are blended in it.

"It turns out that this is a surprise, I should have guessed it a long time ago......"

Holding the third-class merit medal in his hand, he took a step forward and walked forward step by step, his black hair fluttered in the wind, Zuo Xue was not in a hurry, facing the gentle and gentle evening breeze and red glow, he walked to the main gate of the headquarters of the National Defense Science and Technology University.

Yes, I should have guessed it a long time ago, but Zuo Xue didn't dare to think about it in this way, because it was unrealistic.

It's just that the reality seems to be a little cruel, and it's even more slap in the face.

A surprise that made her completely distracted.

Now, Zuo Xue likes this surprise that even her mentor Su Rui doesn't know.

The whole person has completely understood why he suddenly got some inexplicable 20 days of foreign leave, and understands the real reason why he suddenly had inexplicable signs in his heart when he was packing his luggage in the dormitory.

The answers to all your questions are here.

After walking the last distance and coming to the dignified and magnificent main gate, Zuo Xue stopped, raised his hand and saluted the sentry standing guard with a gun in accordance with the rules and regulations, and then took out the exit approval form and the active duty officer ID card from his backpack, and handed them to the sentry for inspection and verification.

"There is no problem with the documents, comrade, pay attention to safety when you go out on vacation." The sentry took the documents and approval form to check and verify, confirmed that the information he had just learned was correct, raised his hand to return the salute, gave his blessing, and handed it back to Zuo Xue.

"Thank you."

Zuo Xue thanked him softly, put away his documents, and stepped out of the dividing line inside and outside the school gate without hesitation, and greeted Zhou Hai, who maintained a military posture outside the school gate.

The distance between the two is getting closer and closer.

Ten meters.

Five meters.

Three meters.

separated by distances, and finally fixed on the number of one meter.

Standing in a military posture, Zuo Xue looked at Zhou Hai who was close at hand, staring at Zhou Hai's eyes with clear eyes, with a faint smile on his face, quiet and silent.

Zhou Hai didn't speak either.

Because, after he saw Zuo Xue, the words he conceived in his mind were like a collapsed embankment, all collapsed, and they were blank.

Tense all over, Zhou Hai looked at the familiar and beautiful girl in front of him, and felt a great pressure, and the strong emotion made him want to immediately hug Zuo Xue into his arms, but the reason and calmness that had control over his body were not allowed.

Be quiet.

Silent.

The vehicles on the road behind shuttled back and forth, and from time to time there was the sound of the car horn, and the sentry standing guard cast his afterglow, quietly observing Zhou Hai in the regular uniform of the Air Force and Zuo Xue in the regular uniform of the army, and was a little puzzled.

What's going on?

The group of birdmen in the Air Force actually came to our National Defense University of Science and Technology to hook up with girls?!

"I've heard people say that the best way to show affection is to hold hands, but I want to have a hug first, and I like to be romantic, just like at Shuangliu Airport 632 days ago."

After a few seconds, Zuo Xue was full of a shallow smile on her face, looking at Zhou Hai's eyes were as clear as water, agile and energetic, and she was not moist and tearful, her voice was tactful and crisp, and she slowly said a number.

632, an ordinary number, but the things behind this number are not ordinary.

This was the time when the two were separated, and Zuo Xue remembered it clearly.

On June 26, 2018, Zhou Hai, who won the top results in Sichuan Province in the college entrance examination, left Rongcheng at Shuangliu Airport.

At that time, it was a romance between friends.

Now, what she wants is romance between lovers.

Hearing Zuo Xue's words, Zhou Hai, whose mind was blank, came back to his senses, stared at the girl in front of him, and a strong sense of guilt appeared in his heart, and he took a small step forward.

Zuo Xue smiled unabated, and the two gently opened their hands and hugged each other into their arms.

Hugs, warmth.

A hug after 632 days.

"I'm sorry, I'm here."

Zhou Hai's eyes were gentle, buried in Zuo Xue's ears, and the tip of his nose smelled a faint fragrance that was refreshing, his words were soft, and he apologized softly.