When Li Zheng took the elevator to the 16th floor and entered Lin's mother's house, he was finally able to put down his suitcase and end his scalper journey.

The only feeling he had in this sea-view house was "empty".

The living room is about three times the size of his own living room, except for the sofa, dining table, and TV, there is only a dehumidifier, with white floor tiles and white walls, which makes it feel like Jiang Qinghua should meditate here.

"Hmm. Lin Yujing flew onto the sofa, stretched out her arms and said, "It's finally here, but I'm tired to death." ”

"There is also a face to say, a person like you should have been fatter than Zhang Xiaoke a long time ago. Li Zheng scolded and put down his backpack, walked to the floor-to-ceiling windows of the row, and crossed the forest belt for several kilometers at a glance, locking the steel giant.

Li Zheng was suddenly fascinated, opened the glass door and walked onto the balcony.

Even at sunset, the launch pad is still visible.

It is conceivable that in a few days, it will be the brightest place on the whole island.

Maybe the brightest place on the planet.

In this dazzling light, Huanghe-2 will take off, then adjust its angle, accelerate towards deep space above the Pacific Ocean, and separate step by step until it completes its mission to put the "Shijian-6" technology test satellite into geosynchronous orbit.

Even if all this hasn't happened yet, even if Li Zheng is just standing here on a whim.

But he still couldn't control his eyes.

It was just when the emotions were full, and suddenly there was a "hmm" on the side.

Li Zheng hurriedly wiped his eyes, but he didn't want to be seen.

He then turned his head away.

was about to speak, but saw that Lin Yujing had already cried into a mess.

"It's finally time to launch...... Hmmmm...... she covered her mouth and looked at the launch pad and choked up, "It's been ten years for the 14-ton synchronous satellite capacity...... It's been 10 years......"

"Don't cry like this...... Li Zheng was so frightened that he quickly pinched himself, "I want to cry when you cry like this." ”

"What kind of mess are you making. Lin Yujing wiped his eyes and said, "For the sake of this capacity, they gave up the previous mature technology, and gnawed out the cryogenic liquid bundling technology from scratch, and tested more times from beginning to end than you have ever done rolls." ”

"Hmm...... I'm not raising the bar, I have to make 5,000 copies of this kind of stuff. ”

"Let's go, let's go!"

"Haha. Li Zheng leaned on the balcony and said with a smile, "But then again, this view is perfect now, is there really a better place to watch?"

"Yes, it's ......" Lin Yujing stopped talking, wiped away his tears and smiled, "Good scumbag, obedient for the past two days, I can take you over then." ”

"Heh, boring, enough for me here. ”

"Hmph, you can even read the words on the arrow body. ”

"Funny, let's go so close?"

"Let it in, and only a few people know about it. ”

When Li Zheng heard this, he was really a little itchy, and rubbed his fingers and asked in a muffled voice.

"What about you...... What do you want to eat at night......"

"Fish!"

"What fish?"

"Big fish!"

“......”

......

Because it was too late, they missed the evening market in the town, and there was nothing new in the supermarket, so in the end, the two found a Northeast restaurant outside the community to make do.

It's not that they like Northeast restaurants much, mainly because they don't have a choice, and they are all Northeast restaurants.

They found out that there may be more Northeasterners here than Northeasterners in the Northeast.

Fortunately, the boss was enthusiastic and the food was smooth, so the two sat at the table in the open-air square and ate slowly and methodically with the sea breeze.

Once you enter the local rhythm, there will be an inexplicable leisure, you are not in a hurry to do anything, and it is also excellent to be in a daze.

The old man of the library said well, for busy people like Lao Li and Ning'er, it is difficult to have such a day of leisure all year round.

Lin Yujing was so idle that she didn't even bother to speak.

She just chewed the sweet and sour loin piece by piece, and shook it from side to side towards the coconut grove across the road.

"Uh-hmm-hmm-"

Not to mention, it's still very rhythmic.

Even Li Zheng rarely asked for a bottle of beer, and occasionally felt pleasant.

There was a large table of people next to him, chatting non-stop.

It seems that two retired couples from the same township, each with their grandson and granddaughter on vacation, are eating and drinking and complaining.

"Oops...... It was said that there were rocket launches in two days...... There were a lot more people at once. A bald man sighed with a sip of wine.

The glasses uncle on the opposite side poured wine and smiled: "Haha, isn't this a good thing, let the children also take a look." ”

The bald man only shook his head: "But we are too close to the launch site, do you think, what if there is an accident, what will we do if the rocket hits us here?"

The fat aunt next to her frowned when she heard this: "Look at your crow's mouth, phew!"

"That's right. The eye-eyed aunt on the other side followed and said, "How can there be such an unfortunate thing, if something happens, their launch center is in danger." ”

"That person is doing that, there is a risk, but who are we going to buy a house here......" The bald man complained after taking a sip of food, "My son too, he has to buy it here, who knows that there is such a big thunder next to it." ”

Uncle glasses raised his hand and said: "Hey, Lao Deng, if you are really worried, we will take the child to the city that day, the city will be fine, I haven't heard that a rocket can fly to the city." ”

"No, no!" the little boy sitting next to him suddenly shouted, "I'm going to see the rocket!!"

"I'm going to see rockets too!!" the little girl on the other side shouted too.

"Yuanyuan, what are you coaxing. The bald man turned around and patted the little girl and said, "Do you know why the rocket launch was chosen here?"

"Why?"

"Because there are few people here, you see, there is still the sea on the other side, so that the rocket explodes, and the damage can be minimized. ”

The bald uncle's voice just fell.

"Poof!"

A young man at the next table squirted beer all over the floor.

Under the gaze of several people, Li Zheng hurriedly raised his hand to hide his face, and his expression was very strange.

"What's the matter, young man?" said the bald man, sneering, "aren't you used to drinking?"

"It's okay, it's okay...... Li Zheng covered his mouth and said, "I'm choking." ”

The people at the table laughed and didn't say much.

But the little boy was still unwilling, so he slapped his chopsticks and began to protest.

"Rockets are going to space, they don't come to us, they don't explode. ”

"Pudding, you're too young to understand. Uncle glasses persuaded, "Those rocket launch sites are either in the desert or in the deep mountains and old forests, just because they are too dangerous." Aren't we able to watch it all the same on TV?"

The boy was still not happy: "Just watch it here!"

"Okay, then you can watch it here. Uncle glasses smiled, "Then the launch pad will fall, and the rocket will rush towards you, and we won't accompany you." ”

“...... The launch pad won't fall!" the little boy shouted.

"It won't fall!" cried the little girl.

"It won't fall!" Lin Yujing shouted.

“......”

The scene froze.

Even Li Zheng froze.

Even if it doesn't sound good, you can't afford to join the children's team.

"Rest assured. Lin Yujing turned to look at the little boy and the little girl, "The launch tower will be repeatedly tested by uncles and aunts every day, and there is absolutely no problem, even if there is a sudden storm, earthquake, and ten lightning bolts on it, it is absolutely impossible to have any problems." ”

Finished!

I've really joined the kids' team.

The two children were instantly inspired.

"Yes!"

"My sister said it, there will be no problem!"

"Who is she, you believe her?" The bald man frowned at Lin Yujing and said, "How do you know?

"Department of Astronomy, School of Physics, Jida University, Group 3 of 12 Institutes of the First Academy of Sinochem Launch Vehicle Technology Research Institute, Ballistic Design Internship Graduate Student, Chen Wei. Lin Yujing picked up the drink lightly, took a sip, and raised her eyebrows, "No one knows rockets better than me." ”

The scene froze again.

Li Zheng is the one who is the most ruthless.

Grunt squirted out a big lump of titles, and his face didn't change color and his heart didn't beat,

Is it so biao?

The people at the table next to her obviously didn't understand her title.

But he was successfully bluffed.

After a while, the bald man said hesitantly: "Then tell me, why did you choose the launch site here?"

"Get maximum inertia speed and save fuel. ”

"What?" said the bald man's eyes widened, "don't talk nonsense and teach children nonsense. ”

"Hmm......" Lin Yujing waved his hand at Li Zheng, "Dr. Li Yi, say it." ”

"......" Li Zheng instantly fell into a hideous situation.

It's over, and it's been dragged to the children's line.

But it has come to this point, and he can only come hard.

Li Zheng coughed his throat and said very politely: "This ...... Uncle, the explanation you just gave to the child is really not comprehensive, and some of it is misleading, and the launch site is located here, mainly based on physical considerations. ”

Seeing that Li Zheng had a nose and eyes when he spoke, the bald uncle didn't say anything for the time being, and the two children were full of expectations and listened attentively.

Li Zheng swept around, and soon found a leather ball next to the boy's stool, so he picked it up and borrowed it.

"I try to speak to the level that elementary school students can understand. Li Zheng picked up the ball and spun it in his palm, "The earth will rotate like this, you know, right?"

The little boy and the little girl nodded immediately.

"Good. Li Zheng said and picked up the chopsticks, dipped the beer, and casually clicked a small spot in the "northern hemisphere" of the ball, "Then let's assume that Yuanyuan is here, and this is probably the location of Jijing." ”

Then, he nodded on the equator of the ball: "This is where Wenhai is located, and Pudding is here." ”

"Then, you are all smart children who know that the earth has to rotate all the time. Li Zheng then turned the ball up again, and used chopsticks to dip beer into the method to draw the trajectory of two points rotating around one circle, which is actually two latitudes and a pair of concentric circles.

"Now, the Earth is spinning in one circle. Li Zheng showed the ball to the two children, "Can you tell me, for such a long time, is Yuanyuan turning more distance, or more pudding?"

"Pudding!" Yuan Yuan said, raising her hand, "This circle of pudding is bigger. ”

"Very good. Li Zheng nodded and smiled, "So we can know that in the same time, the pudding has rotated more distances than Yuanyuan, so who has rotated faster?"

"Me!" Pudding raised his hand excitedly.

"So, even if you stand still, Pudding's natural initial speed is already much faster than Yuanyuan's. Li Zheng's hand pointed to the small dot on the equator and said, "Launching a rocket from Pudding, as soon as it comes up, it has a great speed, we can use less fuel, and we can send the rocket into space, don't you think it's wonderful?"

"Wonderful!" exclaimed the two children, clapping their hands.

"Hahaha!" Li Zheng looked at the two excited children, and he was naturally happy, "So, this is the advantage of Wenhai's launch satellite, it can be said that Nanhai Province is basically the most favorable place for my country to launch rockets." The most important reason we chose this place is to use less fuel and carry heavier satellites into space. Now, the two of you know this, and you have become little experts in physics, and you can talk about it to your classmates when you go back. ”

The little girl looked at Li Zheng with flashing eyes and asked, "Brother, are you a physicist?"

"It's still early...... I've learned a lot ......."

"Do you understand, grandpa?" said the little boy to the bald man, "because of the laws of physics, I chose to launch here." ”

"Go, go, I already understood...... "The bald man scratched his head and asked, "Isn't that the faster you go south, why don't you let go of Sanya at the launch site, what are you doing with Wenhai?"

Li Zheng replied immediately.

"The direction of the earth's rotation is from west to east, and this time it is a synchronous satellite, which remains stationary with the ground with the earth's rotation, so it must also be launched to the east. ”

"As for Sanya, in case of an accident, there is a very low probability that the rocket will land in the residential area in the southern part of Nanhai Province. ”

The bald man took a sip of wine and couldn't ask anything.

But the master of glasses was interested: "Then let me ask more, how much impact will it have on speed and fuel if you choose Jijing and the South China Sea?"

"This ...... I'll do the math in a moment. Li Zheng raised his head, narrowed his eyes, and said after half a second, "I'm just approximating, the speed of the Jijing line is about 370 meters per second, Wenhai is about 460 meters, and the fuel saved is about 12%, and it is precisely because of this 12% that the Yellow River No. 2 can become the carrier rocket with the largest capacity in China." ”

"Ahh The glasses master exclaimed, "Now I understand it completely, thank you, young man." ”

Although the bald uncle on the opposite side was a little reluctant, Li Zheng spewed out a string of truths, which even he could understand, and he couldn't refute it.

"That'...... Young man......" The bald man scratched his face and asked, "That is to say, the rocket was launched towards the sea, and even if there is a problem, it will fall into the sea, and our community must be fine, right?"

"Definitely, definitely, definitely. Li Zheng said with a smile, "The Wenhai launch site is well thought out, and the design and construction team is also the most sophisticated in my country." You may not care, but for children, it is not easy to catch up with the development of aerospace once in a lifetime, and letting children take a look at it can be regarded as a physical enlightenment. I just don't have children, otherwise I would have to hug me every full moon and take a look. ”

"Okay. The bald uncle Yile picked up two beer bottles and walked to Li Zheng's side, stuffed Li Zheng with a bottle and raised his hand and said, "Let's not go, watch the rocket launch!"

The two children jumped up immediately.

The glasses master also came over to have a drink.

When Li Zheng returned to his seat, he was already a little drunk.

He found that Lin Yujing was hiding his face and smirking, and his face was even more drunk than himself.

Li Zheng took a sip of food and smiled: "What's the matter, I know that I am panicked at this time?"

"What's the matter? Lin Yujing said softly, "You are really patient when you give a lecture to children......

"Hey, being idle is also idle. ”

"Don't you hate children and don't want them?"

"yes, it affects learning. ”

"Giggle......

"What are you laughing at?"

"It's okay, it's okay. Lin Yujing hurriedly picked up the cup, "I'll take a sip too~~"

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