In the office, Han Sen twisted his neck, and he finally finished reading the last document.

More than half of the documents here Han Sen actually couldn't understand them at all, but even if he couldn't understand them, he still forced himself to read them all, there was a vague concept in his memory, and what increased was his knowledge, if he encountered relevant problems in future research, even if he didn't know how to solve the problem, he knew that there was such a problem.

The newly recruited student Sha Ziyi gave Han Sen a new cup of tea, Han Sen took a sip and walked to the window, this is underground, but outside the window, the landscape created by the beautiful waterfall is very beautiful.

Standing in front of the window, Han Sen sorted out the articles he had read in his brain, in general, the J-20 and Y-20 have laid a technical foundation for the hidden strategic bomber, and the research of the predecessors is mature enough, but the national strategy is not too urgent for such a hidden strategic bomber, so this project is not too anxious, and Han Sen's improvement of the "turbofan" engine of the "Emei Project" has made the entire project team see new hope.

Therefore, the key to the upgrade of the whole project is to upgrade the "turbofan" engine with increased capacity and enhanced range, which is Hansen's task.

After reading the confidential documents for more than a week, Han Sen's work here was completed, with the title of deputy chief engineer, Han Sen left this "non-existent base", although he participated in this project, but he didn't need to be here all the time.

Leaving the base, Han Sen returned to Yanjing with Sha Ziyi.

At Yanjing Airport, Kuang Tong waited at the exit of the airport early, and when he saw Han Sen coming out, he immediately greeted him, and greeted him with a smile: "Academician Han, you are finally back!" ”

"Hahaha, I'm back!" Han Sen smiled, then pulled Sha Ziyi and introduced: "Let me introduce, this is Sha Ziyi, a newly recruited graduate student from the Department of Mathematics. Ziyi, this is Kuang Tong, your senior brother, I am a doctor of economics! ”

"Hello Senior Brother Kuang!" Sha Ziyi immediately opened his mouth to greet.

Kuang Tong smiled and shook hands and replied: "Hello, hello! ”

Looking at the young Sha Ziyi Han Sen thought about it, after all, this is a student with a special relationship between Academician Tang and Academician Yang, Han Sen threw Sha Ziyi into the school's student dormitory, which was a little not good, Han Sen said to Kuang Tong: "Kuang Tong, doesn't that Zhang Bin have a few apartment buildings in Chaoyang, find Zhang Bin to arrange for Ziyi!" ”

Sha Ziyi was a little embarrassed and stuck to Han Sen's ear, and said in a loud voice: "Academician Han, I seem to have a house in Yanjing?" ”

"Huh?" Han Sen was stunned, how old is this kid who already has a house in Yanjing? My grandfather, who will not pass away, has left him a lot of property! If that's the case, the protagonist's aura is a bit big!

It seems that it seems to be a very embarrassing thing to have a house in Yanjing, and Sha Ziyi said: "Professor Han, I have a bonus and patent fees, Uncle Tang bought me a house in Yanjing!" ”

Han Sen shrugged, he thought too much, Sha Ziyi was really talented.

Just as the three of them were about to walk out of the hall, a beautiful sister walked up with a red face, smiled at the handsome Sha Ziyi and said, "Hi, brother, can you add a WeChat?" ”

If you don't look handsome, you never know how active your sisters are.

"Hahahaha!" Kuang Tong and Zhang Bin looked at each other and smiled, and then said in unison: "Qin Lan has an opponent!" ”

"Huh? What is WeChat! Sha Ziyi looked at this beautiful sister and instantly blushed.

"Humph!" For the first time, the beautiful sister mustered up the courage to take the initiative to grasp it, but she was rejected like this, so if you don't add it, you won't add it, and she pretended to be stupid and asked what WeChat is!

Han Sen thought about it for a while, Sha Ziyi had just come out of the base, and the communication at the base was strictly controlled, Sha Ziyi might really not know what WeChat was, Han Sen smiled and said: "He may really not know what WeChat is, you can teach him the next WeChat, and then take him to play!" ”

The beautiful sister was angry and shy, she turned her head, glanced at Han Sen, and immediately recognized Han Sen, suddenly her eyes widened, as if she saw a demon, and she ran away with a shout of "ah".

Han Sen was stunned for a moment, looked at his sister who ran away, and said in a daze: "This can't be that I was scared away!" ”

Kuang Tong smiled and said: "Hahaha, boss, you are going to compensate Ziyi for a girlfriend, hahaha, let's go!" ”

Now Han Sen's status is not as good as before, especially Han Sen rarely speaks out in public, and the media rarely reports on Han Sen, but Han Sen is also a public figure, and the news of the world again and again, even if it is not Han Sen, there is also Han Sen's shadow, so there are a lot of folk rumors about Han Sen, and it is rumored that Han Sen is wrapped in a frightening mystery.

.......

After returning to Yanjing, Han Sen's life and work returned to normal, a little different was that a few mysterious scientists always occasionally appeared in Han Sen's office to ask Han Sen about math-related problems.

Han Sen came back for about a month, and the summer vacation began, without the vigor of the students, the whole Tsinghua Park was a lot quieter, and the magpies were bouncing on the busy road.

"Whew~"

In the distance, an Air Force painted Warrior military vehicle drove up, and magpies chirped and flapped their wings and took off.

The military vehicle stopped next to a Bentley Continental, and a young Air Force major got out of the car, and when he got out of the car, he carefully arranged his clothes, took a document and entered the office building.

"Bang bang bang!" The Air Force Major stood in front of an office with the words "Han Sen School Committee" hanging on it and knocked on the door.

Because of the summer vacation, several students went to work on their own personal affairs, and only Sha Ziyi was left on Han Sen's side, and there was a knock on the door, and Sha Ziyi immediately ran to open the door.

"Hello!" The Air Force Major who came in first simply greeted Sha Ziyi, who opened the door, and then said to Han Sen with a respectful military salute: "Academician Han, hello! ”

There was a problem with the new turbofan engine test, Han Sen had already received the news, he knew that this Air Force Major was here to deliver information, Han Sen pointed to the sofa in the office, and said: "Hey, sit down, Ziyi, go pour water!" ”

Han Sen sat on the sofa, crossed his legs, and looked at the data.

The young major sitting next to Han Sen sat upright, motionless, he admired Han Sen very much, sitting next to Han Sen, he felt a lot of pressure.

The relationship between the young major's family is still very hard, otherwise it would not be possible to be promoted to a major at a young age, and his family found a lot of connections to get him this opportunity to show his face in front of Academician Han Sen, so he cherishes this opportunity very much, even if it is just a simple appearance this time, Academician Han Sen will not even remember him, but it doesn't matter, being able to show his face in front of the big guy is also a kind of capital.

On the sofa, Han Sen read the document quietly, many of the nouns in the document were replaced by codes, but fortunately, Han Sen had read the code list, but he could know the nouns replaced by these codes, it was a bit difficult to read, but he could read it.

After a brief flip through the data, Han Sen focused his attention on the experimental data of the data, one by one dense data, Han Sen slowly browsed, from time to time in the blank space of the document to simply do a few steps of checking, from time to time to circle a few data.