After eating and drinking, Li Zheng and Lin Yujing had no intention of going home, so they simply slipped to the beach, stepped on the starlight, and chatted with the sea breeze.

Even here, you can still see the brightly lit launch towers five kilometers away.

Lin Yujing, who was on top of the alcohol, couldn't help it, standing on the beach and pointing out, after all, no one knew more about rockets than her.

For the uninitiated, the launch of Huanghe-2 is not much different from every previous rocket liftoff.

But for Lin Yujing, who has been soaking in the Aerospace Research Institute since her mother's womb, this moment is full of historical significance.

Once successfully launched, Huanghe-2 will become one of the top five heavy-duty launch vehicles in the history of carrying capacity and the top three in service, and will also become an important milestone in the history of China's aerospace development.

With Lin Yujing's guidance, behind this launch, a history of human aerospace development slowly unfolded in front of Li Zheng.

There is only one theme in this history -

Send heavier things to the sky.

To evaluate the carrying capacity of a rocket, there are usually two data.

The first is low-Earth orbit (LEO) capacity.

The second is geosynchronous orbit (GTO) capacity.

The former requires an orbital altitude of less than 2,000 kilometers, while the latter requires satellites to be sent to 36,000 kilometers of deep space, so the GTO capacity is more than half of LEO.

Using the GTO as a reference, the all-time record has been held for half a century by the Magnesium Country's Saturn V.

48.6 tons, this is the historical limit of the launch vehicle.

It is also the largest rocket in history, with a take-off weight of 3,038.5 tons.

This rocket, which carries the limits of human beings, is truly against the sky.

It carries thousands of tons of chemical fuel, and with a brutal force, it is only to send 1.6% of its own weight satellites into deep space.

The former Soviet Union then seized the time to launch the equally famous N1 launch vehicle, but four test launches ended in failure.

But even if it is successfully launched, the GTO capacity is only 23.5 tons.

Then, as the Cold War cooled, the space race between the superpowers came to an end.

Those who rebel against the sky have since lost the meaning of going against the sky.

After completing its mission for the last time in 1973, the Saturn V announced its retirement.

The next big guy in the former Su Lian, "Energy", was successfully launched in 1987 and reached a GTO carrying capacity of 22 tons.

These records have not been broken to this day.

Today, the 14-ton weight of the Yellow River No. 2 cannot surpass this record, but it is qualified to challenge.

This launch will triple the capacity limit of the Chinese launch vehicle.

There will always be those who go against the sky, and they will go against the sky.

"That's what mom does. Lin Yujing stared at the brightly lit transmission tower on the other side of the bay, and gently held up the air in his hand, "Send heavier things to the sky."

Li Zheng recalled this history and imagined the moment when the rocket took off.

At this point, he just wanted to say.

You're fucking awesome.

But I held back.

In order not to lag behind Lin Yujing's family too much, he had to set up Lao Li's character.

"My father, why don't you have his mission. Li Zheng stood on the reef and stood with his hands in his hands, "That is, to cut out more tumors, and of course, to damage the patient's nerves as little as possible." ”

“......”

"Ah, they're all great people. After Li Zheng sighed, he suddenly remembered something, "But I remember you said that instead of betting your life on such a task, it is better to look at the stars more, which is why you chose the astronomy department." ”

"Hmm......" Lin Yujing's head gradually drooped, "Even if my mother can work until she is 70 years old...... Even if we can triple the capacity, then triple it, so what...... Not to mention her, even if it's me, the biggest limit I dare to imagine in this life can only be a manned landing on Mars......"

Li Zheng turned his head and asked a little tangled: "But when you look at the Yellow River No. 2, you still cry......

"Yes...... But I know that...... It's a lifetime of poverty, and you can't fly far......" Lin Yujing clenched his fists and looked down at the waves under his feet, "You probably want to say something critical again......"

"No, no, no...... I now understand that no one is qualified to dictate the lives of others. Li Zheng sighed and jumped off the reef, "You are too smart, like solving a problem, you will come up with extreme results directly when you encounter something, and from your point of view, you can always see through the struggle and despair at a glance...... But you just like it......"

Li Zheng said, putting a hand on Lin Yujing's shoulder.

"When you have a heart-to-heart meeting on the basketball court, you say that your troubles are 'time and space scales'. ”

"Now, I guess I really understand. ”

Lin Yujing's body trembled, and he raised his hand to pull him away, but his hand slowed down in mid-air.

However, Li Zheng had no last resort, and had already withdrawn on his own and returned to the posture of standing with his hands in his hands.

"Scum......" Lin Yujing scolded secretly and asked rhetorically, "I remember when you said that your trouble was too little time and too much knowledge. ”

"yes, I forgot. Li Zheng laughed with his hands, "It's really a young maniac to say this kind of thing." ”

"Hmm......" Lin Yujing kicked his feet in the sand and said, "I'm also starting to understand what the scum said." ”

"Huh. Li Zheng chuckled, "I don't believe it." ”

Lin Yujing didn't care about him, and stood in place by himself, watching the waves roll by, letting his shoes sink deeper and deeper into the sand.

"If there are many roads. ”

"My words, I will see the end at a glance. ”

Then choose the most satisfying path. ”

"If you choose a path, you will go down. ”

"You don't see the end at all, and you don't care about the end. ”

"Wherever you go, it's the end. ”

This last sentence instantly shook Li Zheng's goosebumps.

What the fuck is this...... Is it the difference between a score of 55 and a full score......

"I ...... I believe ......it," Li Zheng said in a trembling voice, "There are people who know rockets better than you, but no one understands me better than you." ”

Under the moonlight, Li Zheng couldn't see Lin Yujing's face clearly, only that she turned her head and slipped back: "Who wants to understand you, get up and open!"

"Haha. Li Zheng smiled and chased after him, "I don't, I'll post it." ”

"I'm sick to death, I only stick to Xiao Ke and Mengxi. ”

"But Xiao Ke also sticks with me. ”

"Scumbag, I won't stick to her in the future. ”

......

After returning home and saying goodnight, Li Zheng helped Lin Yujing close the bedroom door.

Then they take a bath, go to bed, and go to bed.

Everything came naturally, with a sense of righteousness and without a hint of embarrassment.

The other two, after finishing a day's work, got tangled.

[Li Yi: Did they sleep?]

[Shen Tinglan: I didn't ask. 】

[Li Yi: I didn't ask either. 】

[Shen Tinglan: What do you ask?]

[Li Yi: No, you ask. 】

[Shen Tinglan: It's hard for me to ask. 】

[Li Yi: I...... Forget it, I'll ask. 】

......

[Li Yi: I didn't reply to me, I should have slept. 】

[Shen Tinglan: Quietly return to me, she hasn't slept yet. 】

[Li Yi: So...... Hey......]

[Shen Tinglan: Teacher Li, why are you sighing?]

[Li Yi: I...... Suddenly I thought of a tumor, spanning the spine and chest. 】

[Shen Tinglan: The scale of the doctor's chat is really terrible (surprised face)]

[Li Yi: Okay, okay, you can rest too, and we will notify each other of the news tomorrow. 】

[Shen Tinglan: Okay, tomorrow will also work hard Teacher Li to take care of them, now at this time I have a sense of guilt when I open WeChat, I have to always do things on the spot, so that the comrades' emotions can be stable. 】

[Li Yi: Understand, understand, wait for good news!]

[Shen Tinglan: (Good night)]

......

The next morning.

When Lin Yujing woke up, the first thing he did was to open the curtains, walk to the balcony of the row, and look at the launch tower with a yawn.

It was confirmed that it was in good condition and that no rockets were put on the shelves.

It's like she's gone if she doesn't look at it.

However, Li Zheng was already sitting in the living room, glanced at Lin Yujing through the floor-to-ceiling window of the living room, and said with a dry smile: "Are you a cat? ”

Lin Yujing turned around and was about to scold, but shouted "wow" again.

On the table, there are several plates, and coffee!

She sniffled and shrunk into the living room.

It's fried fish steak!

There are also ham sausages, lettuce and cereal porridge.

"You...... You ......" Lin Yujing sat down tremblingly, picked up his chopsticks and aimed at Bai Huahua's fish steak, "You still have this ability." ”

Li Zheng closed the book and sneered: "I can put forward some conditions before you can eat it, but I am generous and open-minded, so hurry up and eat it while it's hot." ”

Needless to say, Lin Yujing has already caught it.

The first chopsticks.

Clipped!

Second chopsticks.

More shattered!

She was in a hurry.

Pick up the plate and grab it and eat it.

Lin Yu chewed the fish steak quietly, and instantly became energetic: "Where did you buy it, there is this in the small supermarket outside?"

"There is no supermarket, but the bazaar does. Li Zheng snorted lightly, smiled and took out a handwritten strategy book and showed it to Lin Yujing.

"I already confirmed it before I came. ”

"Local food is mainly bought in the morning and evening. ”

"The market is open from 6 to 8 a.m. and 3 to 5 p.m., and these are the only two times when there will be excellent food supplies. ”

"If you want to eat fish, you can get to the morning market at 5 a.m. to buy the freshest and fattest. ”

Lin Yujing was so shocked that she dropped all the fish pieces: "You got up at 6 o'clock?"

Li Zheng grinned and raised his hand to his eyebrows.

"No, it's 5 o'clock. ”

"Just now, it's just a superficial strategy. ”

"There's a deeper strategy. ”

"The real hardcore eaters buy directly from the fishermen. ”

"At about 5:30 a.m., the fishing boats that were salvaged at night and early in the morning will return to the port one after another. ”

"Buy directly from them to get the best, freshest, and fattest seafood. ”

"By the way, I ate the candidates' oysters at noon, and I was already soaked in the kitchen. ”

"Got it, it's called a foolproof trip. ”

Lin Yujing was shocked by Li Zheng's series of strategies.

"You're at home...... Is that the same?"

"......" Li Zheng swallowed and foamed, "I will order takeout at home, and cook porridge at most......"

"Giggle......" After Lin Yujing snickered, he didn't speak again, only lowered his head and continued to eat violently.

"Don't get me wrong, it's none of your business. Li Zheng explained with a trembling face, "I just have to make the travel plan to the fullest." ”

"Uh-huh. ”

"Don't be sentimental. ”

"Oooh oh. ”

"I went to study...... Remember to brush the dishes. ”

"No, no, no. ”

"You've got to do something, don't you? You're going to be a pig if you keep going. ”

"Lululu. ”

"Ah...... How can I explain to Aunt Shen......"

"Alright, brush, brush. Lin Yujing dug into the cereal porridge and smiled, "Let's go out and buy some furniture together, I want to put reclining chairs and hammocks on the balcony." ”

"Okay, I'll sleep in a hammock. ”

"I sleep. ”

"Think about who got all this food?"

"Uncle Fisherman!"

“......”

......

So, the theme of this morning naturally became home improvement.

Because there are new properties nearby, there are many home improvement stores in the town.

After half a morning's work, Li Zheng only built a set of office chairs and desks for studying.

Lin Yujing purchased reclining chairs, hammocks, cartoon beds, barbecue grills, drying racks, plush toys, hanging pictures and so on......

At one o'clock in the afternoon, these things were arranged, and Lin Yujing was tired on the sofa.

But when Li Zheng appeared with garlic oysters, she jumped up again.

After a full meal, tidy up the table and lie down on the balcony.

Fortunately, it was a cloudy day, not sunburning, and a little windy.

One of them was on a rattan deck chair and the other in a hammock, and they both fell asleep without a few words.

Less than three o'clock, Li Zheng woke up first, and he also got up and glanced at the launch tower first, and only after making sure that there was no change, did he look at Lin Yujing.

This guy has to sleep on his stomach in a hammock, and he is still holding a large Stitch......

Li Zheng didn't bother to pay attention to her, so he went into the house to boil water, made a pot of local herbal tea, and then sat at the newly purchased desk in the living room and began to study.

Unlike in the past, this time the theme is biology.

There aren't many books, just a dozen college textbooks.

After all, I am a self-taught person who has eaten chemistry and physics, and reading these textbooks is like reading an extracurricular book, like a boat on a small river, relaxed and comfortable.

Moreover, biology and chemistry have countless similarities, and he basically understood a lot of biological knowledge when he was studying chemistry, or the knowledge was superficial at that time, and now he has seen the perspective of biology and understands it more deeply.

In general, the rules of biology are more straightforward than physical chemistry, and there are few basic principles, and more superficial laws summarized by experiments.

And these rules often need to be memorized by rote for solo biology people.

For example, the synthesis and decomposition of amino acids, proteins and other things, only from a biological point of view, need to memorize a lot of knowledge summary, but I don't know why this happens.

However, combined with organic chemistry, it is possible to understand the principles in depth, and there is no need to memorize them, and they can be inferred naturally.

As for the 10,000-year-old puzzle fruit fly mating......

This is still more comfortable to do with mathematical models.

Overall, the current biology learning is probably like brain radio gymnastics, refreshing and refreshing the spirit, and after learning, it is just a good time to brush up on the IPHO problem.

After Li Zheng finished a few biology books in more than half an hour, Lin Yujing also rubbed her eyes and appeared through the balcony door.

"Hmm...... It's almost four o'clock......"

"Yes, it's four o'clock and I haven't ......studied yet," Li Zheng shook his head and said, "Don't you feel guilty......

"Come out to play, learn what to learn. Lin Yujing smiled, went to the bathroom to flush his face, and then went into the house to mutter, and took out a small rectangular bag, as well as a number of power cords and TV cables.

Li Zheng glanced at her and ignored her.

saw that she went around to the back of the TV again, and after muttering, she sat cross-legged on the sofa.

The TV screen then lit up.

A cat Leo appears with the cover of a racing car.

The voice of the cheap came from the TV-

“Morio Kart ——eight！”

Then there's the music that little ones love.

"Dudu~Tut~~" Lin Yujing held the steering wheel and followed Dudu.

"You ......" Li Zheng looked at a large number of Rentian characters on the screen, and his face twitched, "The only luggage you carry...... Is this the thing?"

"And so. Lin Yujing patted the small black bag, "Cat Leo Brother U, Big Drummer, Full Dance, Animal Island Club, a lot...... Enough to play for a year. ”

"Rely on ......" Li Zheng covered his head and said, "You be quiet, don't disturb my study." ”

"Oh. ”

Lin Yujing did quietly.

But Li Zheng was still disturbed.

Every now and then, he would glance up at the TV and watch a bunch of silly stuff throwing things at each other while driving.

In the end, Lin Yujing operated Kuba, regretting the second.

"Still stupid. Li Zheng snorted and laughed, "The red turtle can obviously be tracked, what to throw around, leave it to the first dirty place in the end, won't you win the championship?"

"You're stupid!" Lin Yujing bared her teeth and scolded, "At that time, I didn't even have the top three without the red turtle." ”

Li Zheng waved his hand and said: "Such a simple children's game, you can be in the top three without props." ”

"If you have the ability, you can try. Lin Yujing said, "Cloud player, cloud scum." ”

"Huh. Li Zheng sneered, "I'm sorry, but the person who can seduce me to play the game hasn't been born yet." ”

"Oh, yes. Lin Yujing rubbed her chin suddenly, "You are a C2 book, and you are not qualified to race with me at all." ”

"What does this have to do with C2......"

"Anyway, now all female drivers take the C1 test, and the C2 test is probably only ...... People with cerebellar problems...... Or maybe it's a person with a disability?"

"You're enough...... It's just that the time is too short...... C2 is faster. ”

"Forget it, forget it, C2 just open C2 well, don't bully you. Lin Yujing waved his fist and said, "Come on, work hard, be strong." ”

It's unbearable.

Li Zheng slapped the table and stood up.

"And the steering wheel!"

vertex