For computer keyboards, most people actually don’t have too many requirements.

There are many types of computer keyboards, including capacitive keyboards and mechanical keyboards. Our common keyboards are actually capacitive keyboards.

In fact, from the perspective of the development history of keyboards, mechanical keyboards are the earliest keyboards, and they are derived from the best typewriter mechanism.

However, because the mechanical keyboard is relatively expensive, the quietness is poor, and the weight is generally heavier, it was later gradually replaced by a lightweight capacitive keyboard.

Most of the keyboards sold on the market are capacitive keyboards, and some desktop computers and the built-in keyboards in laptops are also capacitive keyboards.

At the same time, the advantages of the keyboard are light weight, quiet typing, and relatively light force.

But compared with top mechanical keyboards, there is still a gap.

Although the top mechanical keyboard is heavy, the quietness and rebound strength of typing are very good.

The sound of mechanical keyboards is actually adjustable, and some people especially like the typing of mechanical keyboards.

In recent years, mechanical keyboard sales have also been very high.

However, Chen Yan had only heard of this keyboard at Zhang Hui's house and had never seen it before.

Chen Yan knows a lot about computer programs with rewards. Although he doesn’t know that much about hardware, it’s just some basic knowledge, but Chen Yan knows that the keyboard at Zhang Hui’s home is definitely the top.

.

It is a hot air limited edition mechanical keyboard.

Black and white partitions, very good texture.

Chen Yan gently taps the keyboard with gloves

The unique sound of the mechanical keyboard comes, but the sound is very light, similar to the appropriate feeling that it has the characteristics of the mechanical keyboard but is not noisy.

The rebound force of the fingers is very small, which is very suitable for long-term typing.

This kind of keyboard is either bought by keyboard enthusiasts, or there are generally only two possibilities.

The people who use it are hackers or writers who typify a lot.

The first thing that hackers are eliminated is that it is not because of anything else, the computer on the desk is too old.

It's just an ordinary desktop computer, which looks like a configuration that costs no more than 5,000 yuan.

Not to mention hackers, this kind of computer will be more stuck even when used to play games.

As for keyboard enthusiasts, this possibility is very small, because Zhang Hui only has such a keyboard in his study. As a keyboard enthusiast, there is not a dozen or twenty mechanical keyboards. How dare you say that he is a keyboard enthusiast?

So, it seems that there is only one possibility left, is Zhang Hui engaged in writing work?

Because the most powerful thing about this high-end keyboard is actually the setting of rebound force, the appropriate rebound force of the keyboard can protect the user's fingers.

Otherwise, if you use a regular keyboard to type over the years, your fingers will be very easy to damage.

For text workers, this kind of thing is like a gun in a soldier's hand.

Just like a writer at a certain point, if you don’t have a better keyboard, you dare to say that you are a certain point?

Then it’s a concept that the soldiers who are on the battlefield don’t have guns. What kind of battlefield do you go to without guns?

However, strangely, there are no literary books on Zhang Hui's bookshelf.

On the contrary, most of them are engineering books and many professional chemistry books.

What exactly does Zhang Hui do?

"Team Huang, what are the professions of Zhang Hui and Wang Xia?"

"Oh, Wang Xia opened a flower shop in the shop downstairs of this Zijin Garden Community."

"Zhang Hui is engaged in scientific research and works at the 301 Research Institute in Hulu City."

"301 Institute? What exactly is he studying?"

Chen Yan pointed to the books on the bookshelf: "There are so many chemistry books in his study."

"After Zhang Hui was killed, we sent people to Zhang Hui's work unit according to the process and learned about Zhang Hui's specific situation."

"Also Zhang Hui's background information, some investigations have been conducted."

"This Zhang Hui is a top student. He received a full scholarship for studying abroad when he was in undergraduate college."

"After studying in Meili Country for 5 years, I studied for a doctorate degree and then worked in a scientific research institution in Meili Country."

"But three years ago, Zhang Hui quit his high-paying job in Meili Country and returned to Hulu City."

"Through the introduction of talents, I joined the 301 Institute to engage in research on new chemical materials."

"This house was the resettlement house bought for him by the 301 Institute in order to attract Zhang Hui to work there."

Chen Yan was slightly stunned. He didn't expect that Zhang Hui actually introduced talents and obtained a doctorate degree in Meili Country.

However, since Zhang Hui has taken root abroad, why is he back?

And when I returned to a second- and third-tier city like Hulu City, it is better than Hulu City than Shen City or Liancheng?

Huang Guojun naturally saw Chen Yan's confusion expression and knew what Chen Yan was thinking.

When he knew about this situation, he was also very confused.

According to normal people's thinking, even if Zhang Hui returns to China, he should not return to Hulu City, or to Beijing or Shen City. If he doesn't want to go to Liancheng, he is better than Hulu City.

"Zhang Hui's hometown is Hulu City. His parents live in the rural areas of Hulu City. They are not in good health in recent years."

"When Zhang Hui first took root in the beautiful country, he took his parents to live there for a while, but the old couple couldn't stand the environment there."

"The health is getting worse and worse. Zhang Hui's family has only one son, so Zhang Hui chose to return to China."

"His parents were not used to staying in Hulu City, and their physical conditions improved a little after returning to the countryside."

"It's because of this that Zhang Hui stayed in Hulu City."

"However, the 301 Institute is a relatively famous scientific research research in Hulushi. Zhang Hui recruited it through talent introduction, and his salary is still relatively high."

"And as soon as I returned to China, I joined the most important new materials research group in 301, and made great breakthroughs during that period. I was a key researcher at the 301 Institute."

"When did Zhang Hui and Wang Xia get married?"

"It was also three years ago. The two got married in the first year after Zhang Hui returned to China. We checked and found that Wang Xia and Zhang Hui were once high school classmates."

Chen Yan nodded, Huang Guojun and his team's background investigation of Zhang Hui was quite detailed.

The occupation, family background, and even previous study abroad experience have been investigated clearly.

"Does Zhang Hui's new materials research work involve confidential information?"

"Of course, it's not only confidential but also top secret!"

As soon as Chen Yan asked this question, Huang Guojun knew what Chen Yan meant.

A person who is engaged in secret scientific research was suddenly killed. Does this have anything to do with the research work he is engaged in?

"After Zhang Hui was killed, we found out that Zhang Hui was actually working at the 301 Institute. The joint research institute immediately launched a confidentiality work screening."

"The confidentiality work of the institute is very strict. No one is allowed to carry any storage medium when commuting to and from get off work. They will conduct searches and scans."

"We have confirmed that the search and scanning of the institute have records, and it is video and scanning records. Zhang Hui has not carried any illegal items in recent times."

"We also conducted a relatively detailed search of Zhang Hui's home, and no information was found related to the new chemical materials he was engaged in research."

"We have also conducted screening for this computer and found no confidential information that was stored illegally."

"We also checked Zhang Hui's online records. He browsed some sites regularly every day and never recorded them on illegal websites."

"Also, the institute also reported that there is no sign of the stolen research results. Although there are institutions engaged in similar materials research abroad, judging from the research results currently released, although it closely follows the progress of the 301 Institute,

There is no sign of surpassing.”

"In other words, judging from the current clues, Zhang Hui's death and his research institute's work should be irrelevant?"
Chapter completed!