Shen Jiao opened the small package first.

Inside is a men's watch, the watch is very beautiful, there are no extra patterns, the overall feeling is very clean, low-key, Shen Jiao likes it very much.Putting the watch on his hand, he found that the size was very suitable. Shen Jiaozhen kissed the watch dearly, and then put it in the drawer.

Inside the big package were some original English books. There were three books, and the books were very thick. Shen Jiao flipped through them one by one, and finally picked one at random to read. The remaining two books were locked in the cabinet.

Shen Jiao's 19 years old, Chu Yu's 21 years old, they couldn't be together.In the second year of their acquaintance, they separated for two months, but luckily it was only two months.

In March, the first semester of the college entrance examination was resumed.

Accompanied by Father Shen, Shen Jiao embarked on the road to Beijing.

It was the first time for Shen Jiao to take a train, it felt very fresh.Sitting alone on the lower bunk, I kept looking out the window.Most of the tracks are built in the wild and in the suburbs.It is March now, which happens to be the season of recovery of all things. It may be that the grass has sprouted and is green and green.

Father Shen bought the ticket from the shop next door to Shen Jiao. Seeing Shen Jiao staring out the window, Father Shen smiled, "What are you looking at, so fascinated."

"I didn't see anything, but I was a little bored. So I stared out the window."

"If you're bored, why don't you take out a book and read it? Don't you stay at home all the time? The car is also quite stable. You can read it slowly, and you'll be there in a few hours."

Shen Jiao couldn't bear to read in the car, if it was accidentally crumpled, he would feel distressed for a long time.

"Dad, I don't look at it, I just look out the window, it's good."

Shen's father didn't force him, "It's up to you, you can do whatever you want." After a while, he asked again: "Jiaojiao, are you hungry, do you want to eat something?"

Shen Jiao shook his head, indicating that he didn't want to eat.

A few hours later, the train arrived in Beijing.

Father Shen found a tricycle master at the train station, spent [-] cents, and asked the master to pull them and their luggage to Beijing University.

When they arrived at Beijing University, a special person led Shen Jiao and his son to sign up. After signing up, they led them to the dormitory building and left.The new students entered school today, and they were a little too busy, so they could only lead them downstairs.

"Jiaojiao, do you see if Dad's clothes and hair are messy?" Shen Ming was a little nervous, just now he saw someone looking at the car to send the child to school, and he didn't know if he would embarrass Shen Jiao by doing this.

In all fairness, Shen's father is very handsome, but his skin is a little dark and rough because of years of hard work, but he also looks very energetic.

Shen Jiao put down his luggage, stepped forward and gave Father Shen a hand, "No mess, no mess, Dad, hurry up, I have to go to the mall to buy something later, or I won't be able to catch the evening train."

Hearing this, Father Shen stopped dawdling, took his luggage, and climbed up to the second floor in one breath.

When the father and son entered the dormitory, they found that the door of the dormitory was open, and someone was already cleaning up inside.Seeing Shen Jiao and his son, one of the parents hurried forward and asked, "Hello, hello, are the classmates also in dormitory 203?"

Shen Jiao nodded, "Yes, Auntie, my name is Shen Jiao, and I also live in dormitory 203." After speaking, he pulled Shen's father who was next to him, and introduced: "This is my father."

The aunt stretched out her hand to Shen's father, "Hello, Brother Shen, this is my child named Zhang Qing. Qingqing, come here quickly and say hello to your classmates."

Just after he finished speaking, a tall, thin boy with fair appearance stepped forward and greeted Shen Jiao and his son.

"Brother, where did you come from?"

Seeing that the other party was so enthusiastic, Father Shen gradually let go of his guard, "We came from Province S, and our hometown is Shenjiatun."

After hearing this, the other party sighed, "That's quite far away. You've been on the train for a while, right?"

"Yeah, I've been sitting all day."

"Then let's help you clean up together, and hurry up."

Shen Jiao and Father Shen quickly refused, "No need, we can do it ourselves."

Seeing that the other party simply refused, Zhang Qing's mother and son did not insist, "Then you clean up first, and I will take Zhang Qing to the school first."

The father and son thanked each other again.

Father Shen walked around the dormitory and found that the living environment was very good, the most important thing was that there was hot water, which reassured Father Shen a lot.

The bed in the dormitory is a bed and table structure, and each person has three large cabinets.Shen Jiao lived in shop No. [-], on the side near the gate.There is a wardrobe next to the table, which has a lot of space. There is also a row of large cabinets in the back of the dormitory, which are marked with numbers, and each person has two.Father Shen put one quilt in the cabinet, and spread the other on the bed.

Shen Jiao was in charge of wiping the bed boards, tables, stools, and armrests; hanging clothes; hanging mosquito nets...

Put the last book in order, and things are organized.It is 03:30 in the afternoon, and Father Shen is on the train at ten o'clock in the evening.

Shen Jiao squeezed Shen's father's shoulders, "Dad, you go to bed for a while, and I will wake you up at 06:30, then let's go out to eat something, and then go to the mall to buy some specialties to take home, how about it. "

Father Shen shook his head, "I won't sleep anymore, my body is dirty, it's not good to get the quilt dirty, not to mention I'm not sleepy."

Finally, under Shen Jiao's persuasion, Father Shen took off his coat and lay down on the bed.

Shen Jiao looked at the beds in the dormitory, and found that three of the beds were already occupied, and only one bed was empty, probably because there was still a roommate who hadn't come.

Sitting below for a while, Shen Jiao took out the alarm clock that Shen's father bought two days ago, set the alarm for six o'clock, and then fell asleep on the table.

On the other side, Chu Yu also just rushed back to Beijing.Chu Yu has been making solar cells for the past two months.Although he had given a trick to country M and country Y before, he still chose photovoltaic power generation in solar power generation if he wanted to generate electricity.This also requires making batteries, which are nothing more than solar cells.

Chu Yu chose to make monocrystalline silicon solar cells.Because compared to other types of batteries, monocrystalline silicon solar cells have a higher conversion rate and a longer lifespan.In the previous life, the Beijing Research Institute also set up a special research team to prepare monocrystalline silicon solar cells. At that time, Chu Yu was preparing another experiment carefully and did not participate in it.

Chu Yu only knew that in the end, the photoelectric conversion efficiency of monocrystalline silicon solar cells reached 23%, and the service life reached 20 years, which achieved good results.

However, due to the high manufacturing cost of monocrystalline silicon solar cells, although the photoelectric conversion efficiency has improved a lot, the country has chosen to vigorously develop polycrystalline silicon solar cells for comprehensive considerations, although its life is very short.

After more than two months of research day and night, Chu Yu and the others have made great progress in monocrystalline silicon solar cells.Its photoelectric conversion efficiency has reached 35%, and it is conservatively estimated that it can be used for more than 28 years.Its preparation cost is reduced by 40.00%, which is a very successful experiment.

Two days ago, Chu Yu followed Zhang Jirong to survey the northwest and southeast coastal areas, and finally chose to build the first solar power station in the northwest area.

After everything was settled, Chu Yu hurriedly bought a ticket and came back. He remembered that today was the day when Shen Jiao started school.

When Chu Yu came to Beijing University, it was already dark, but because it was the reporting time, there were many students entering the school with their luggage on their backs at the school gate.

When he came to the school gate, Chu Yu found the uncle who was the gatekeeper, "Master, I'm here to find my younger brother, he just entered the school today, and I'm from the school next door."

After speaking, he took out his acceptance letter.

The doorman took Chu Yu's admission letter, saw the content and photos on it, looked at Chu Yu carefully, and let him in.

"You can ask the group of people who signed up in front, and ask according to the major, it's marked on it." For the children who study hard, the doorman still likes it very much, so he inevitably said a few more words.

"Okay, thank you sir."

Ten minutes later, Chu Yu arrived outside Shen Jiao's dormitory.Smoothing the folds of the cuffs, taking a deep breath, Chu Yu knocked on the door of the dormitory.

"Dong dong, dong dong dong."

The moment the door opened, Chu Yu's heart suddenly started beating violently.It seems that the person is a thin man, not Shen Jiao...

Zhang Qing looked at Chu Yu, saw that the other party was in his early 20s, and he should be a student, so he asked, "Student, this is 203, are you looking for someone, or did you go to the wrong dormitory?"

Chu Yu came back to his senses, and replied: "Hello, classmate, I am Shen Jiao's elder brother, I am here to look for Shen Jiao, can you call Shen Jiao out for me?"

"I'm sorry classmate, Shen Jiao went out with his father in the afternoon, Shen Jiao said that he won't be back until after ten o'clock, and he is not in the dormitory now."

"Well, thank you classmate."

"How about you come in and wait?"

Chu Yu shook his head, "No, I'll go first." After speaking, he turned and went downstairs.

Zhang Qing closed the door, and now everyone in the dormitory is present except Shen Jiao.The other two had never met Shen Jiao before, and they were too embarrassed to go out to talk to them just now, but they saw that Chu Yu was quite good-looking and polite, so they had a good impression of him.

"Hey, Zhang San, why didn't you say a few words just now to let someone come in and sit down, after all, he is also our roommate's elder brother." A tough-looking man with thick eyebrows and big eyes asked.

Zhang Qing walked forward slowly, pulled out a newspaper from the drawer, and rolled it into a cylinder.In the blink of an eye, he hit the man who had just spoken with a newspaper tube.

The man was a little confused by the beating. He had just finished exercising and was only wearing a long-sleeved shirt. A piece of newspaper was beaten down, and the pain was severe.Suddenly reacted, grabbed the newspaper that was about to fall, and quickly shouted, "Damn it, Zhang Xiaosan, what are you doing, it hurts."

Zhang Qing only said two words coldly: "Let go."

The man seemed to be thinking about whether to let go, but finally met Zhang Qing's cold eyes and chose to let go.But he still couldn't help muttering: "What are you doing? This beating is very painful." As soon as he finished speaking, he was beaten twice again, but the man didn't dare to catch the newspaper again.

"Next time, if I hear you calling my name indiscriminately, I'll tell Uncle Wang to discipline you." After speaking, he picked up his clothes and went into the bathroom.

And Wang Yi also had a hard time saying it. He didn't want to make Zhang Qing angry, but maybe he got used to bullying Zhang Qing after he was a child.

Jiang Zhengkai, who was watching everything silently, swallowed his saliva, "Brothers, what's the situation with you guys?" He didn't expect that Zhang Qing, who looked innocent, was a character who didn't talk too much. With said.And Wang Yi, who looks like a big and three rough, is like a little daughter-in-law. He can't fight back or scold him. He feels a little dizzy, and he needs to deal with it first.

Wang Yi didn't have the nerve to say that he was afraid of Zhang Qing, and he didn't tell Jiang Zhengkai how high Zhang Qing's strength was, so he could only laugh, "Oh, we've known each other since we were young, we live in the same hospital, and I'm here to see him Thin arms and legs, afraid of hurting him, I didn't fight him just now."

Jiang Zhengkai looked at Wang Yi, who had erratic eyes, and finally nodded, "So that's the case, I just said, you don't look like the kind of person who can't fight back when you beat him or scold you." No wonder.

Wang Yi nodded quickly, "Yes, yes."

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