The music box made by Zheng Ying is absolutely non-electric, and it is also a mechanical principle.

Originally, he wanted to make it a hand-cranked type, but it didn't seem appropriate for people to listen to the music box music while using it as a motivation.

So Zheng Ying took inspiration from the old alarm clocks and used a steel mainspring as a short-term power unit to drive the music box.

Then, on a softer iron sheet, the prepared piece is simply notated, and all the numbers are determined to be played, which is the so-called time interval between the notes.

Then he used very small steel spikes to nail them all to the sheet of iron, according to the position of the notes.

Finally, one side of the nail cap is covered with a wooden roller thick enough, and 8 steel plates of different lengths are used as reeds for the sound.

The inlaid drum is aligned with a sequence of nail positions in rows and connected to the mainspring, and as long as you earn enough laps, release the handle and let the drum spin automatically.

As the drum turns, the nails strike the steel reeds until all the nails of the drum are played, and the whole piece can be looped again until the mainspring is fully stretched.

Although Zhang Yao didn't know how complicated the working principle of the mechanical calculator was, he could fully understand the process design of the music box.

Although the working principle of the music box and the working principle of the mechanical calculator were not the first to be invented by Zheng Ying.

But the boss of the third base, Zhang Yao, he was very sure that this child from a poor family did not have the spare money to read books about these theories and get in touch with those primitive principles of craftsmanship.

"It's not talent, we've definitely chosen the right person, so what are you waiting for? Hurry up and train to become a talent! Itaker said excitedly.

Zhang Yao also agreed with his idea, so he told Zheng Ying about it.

Zheng Ying frowned, and shouted stupidly: "No matter how smart I am, I can't create superpowers!" Will this cause you trouble, and then you will dislike me and drive me away. ”

Zhang Yao laughed after hearing this, he knew that this might be the shadow brought to him by this underage child, who had a difficult career.

That is, the so-called victimization phobia, which is not particularly serious.

"Don't worry, kid, you can join the scientific research group, and now we can give you a salary of 10 million, which is a monthly salary! You have enough freedom and benefits that no other institution in this world can give, provided that you have a heart that is loyal to the interests of humanity. ”

Heard Zhang Yao say this.

Zheng Ying was so excited: "Then I can give my money to my good buddy, his name is Liu Guang, the two of us grew up together, and he is definitely a good person, and he also wants to be a soldier when he grows up in the future, to protect his family and defend the country." ”

However, Zhang Yao's face collapsed in an instant.

Because for the third base, the world must be peaceful, there is no war, and it is naturally a good thing to defend the country, but everything in the third base is not aimed at the so-called enemies on the earth.

At the same time, there are two other institutions in the third base, in addition to the scientific research group that Zheng Ying is going to join this time, there is also an action group and a support group.

The scientific research team is responsible for scientific research, and the action team is responsible for the special operation support group, which is like their nanny and position, guarding their absolute safety.

"What's wrong? Can't you? ”

Zheng Ying saw Zhang Yao waving his hand, turned his head and left angrily, so he hurriedly reported a life-saving straw and asked Yitak in a low voice.

Itaker also shook his head helplessly: "You can spend the money you are given, don't make trouble for the boss, you will know later." ”

After finishing speaking, he also left, leaving Zheng Ying standing alone on the teaching field, he felt extremely lonely at the moment.

Because he is a newcomer, he doesn't understand anything, and he doesn't have a special person to introduce him, so he feels that everything has to be guessed by himself, so how can he guess?

At this moment, he felt that they were not as friendly as he imagined, although he belonged to the kind of child who was very withdrawn in life, but he desperately wanted to make himself a useful person.

What Zhang Yao said before, for the sake of human interests, it is permissible to use means or anything, it feels like hearing the lofty ambitions of a powerful person.

But this feeling of suddenly isolating a person makes Zheng Ying feel that this is no different from bullying.

In fact, in the eyes of the third base, it is nothing more than the result of Zheng Ying's lack of consideration for certain humanities and rules and systems, it is true that he only deletes "science and engineering", and for some other things, he is like an idiot.