A nation's industrial development begins with junior engineers.

"One Night in Beijing, don't drink too much. Walking outside Di'anmen, no one can remain unmoved."

Hey, Little Dumb Hair is currently in an alley not far from Di'anmen.

Before Jiang Xia opened the door, the old man, who loved playing with air fryers, laughed and said, "My brother has been saying he wanted to meet you for a long time. What a coincidence!"

"Hey buddy! I'm home! Any leftovers at home...?"

"Keep your voice down, the kids are all asleep. Why are you so late today? Didn't you say you were coming home early this morning?"

A woman came out, the dim light shining on her gray hair, making her look extremely kind.

"Ha...look, which one is this!"

"Who else could it be? Aren't you all inseparable? What's so interesting about this..." The woman ignored the group behind her and just held the old man's hand: "Where did you eat today? Did you eat well? Did you throw up today?"

"No, no... Oh, let's not talk about that. I'm showing you the little guy in the back!"

"Oh! And another guest said..." The woman quickly straightened her clothes and smiled gently at Jiang Xia and Lao Wang.

"Welcome, welcome, comrades, to our home!"

"Haha, no need to be so formal. Haven't you been wanting to meet this young comrade for a while? Now that he's here in person, you're putting on airs, aren't you?"

The old woman stepped closer and carefully examined the excited Jiang Xia: "Oh my, it's you!"

As the old woman spoke, she walked over to Jiang Xia, who was still in a daze, and grabbed his hand: "What a fine young man, but you don't look very energetic! I must be hungry! Have you eaten? Oh dear, I came in such a hurry. You two sit down for a while, I'll go get some food right away."

The old woman had large, rough hands. She gently squeezed Jiang Xia's hand, then quickly let go, pulled an apron from her pocket, and swiftly hung it around her neck. She was incredibly efficient.

"Boss, we've already eaten..." Jiang Xia didn't know how to address him, feeling that nothing sounded right, and finally managed to blurt out "Boss"...

"A little kid like you, how can you eat your fill? Wait until I make you something..."

Seeing that Jiang Xia was about to say something, the old man who loved playing with air fryers patted his hand: "It's alright, let her do it. There are other people coming later..."

"Come on, let's go inside. Finish your drawings first, and we'll talk properly once everyone's here..."

Uh, is anyone else coming?

Who cares! Jiang Xia, who has already entered a state of partial rationality, just wants to develop the thermobaric bomb as soon as possible.

After the old man brought Xiao Dai Mao into the study, he said he was going to prepare some "spicy" food for Jiangxia. He then pulled another old man around and disappeared.

Ignoring the reserved Lao Wang beside him, Jiang Xia took out the crooked drawings from the car and began to review the situation under the light of an old desk lamp.

The main problem is that this thing looks simple, but in practice it is like "looking at a mountain and running to death..." Thermobaric bombs are simple, right? If you break them down, they are just the bomb body, the filling material, the fuse, and the detonation system.

Leaving aside the projectile and its contents, the fuse alone dealt a heavy blow to the overconfident Jiang Xia.

The reason is that the two-stage fuse of a thermobaric weapon requires precise control of the detonation time and sequence. The mechanical design is relatively straightforward, but don't forget that this thing also involves the detonation logic.

In thermobaric weapons fuses, the detonation time interval between the two stages needs to be accurate to the millisecond level. Even with current timing technology, you couldn't achieve that level of precision by simply stuffing a Rolex into it!

In particular, the current time standard is still obtained through astronomical observations at observatories...

Jiang Xia is very frustrated. A problem that could be solved with a small timing chip in the future has been keeping him stuck here for a long time.

"That's why circuits are the worst!" the mechanical dog barked helplessly. After all, the situation in Jiangxia's later years was different from now; when designing, all you had to do was find the chips or components that met the requirements and fill them into the design drawings.

Unfortunately, China, which is currently impoverished, cannot provide him with such support.

"Hey, why didn't we take the timing chip apart and see how it was done inside..."

No wonder the United States only developed such a powerful weapon in the 1970s; secondary detonation and such are really difficult to achieve...

……

Just as Jiang Xia was feeling frustrated and conflicted, two "glass balls" rolled to Jiang Xia's feet. The touch of the glass balls made Xiao Dai Mao stop pulling his hair.

"who!"

"It's me! Who are you? What are you doing on my dad's desk?" A mischievous child poked his head out from the large cabinet in the study.

"Ah... little friend, what's your name?"

"Feifei!"

"Didn't the boss say you were all asleep? What are you doing here?" Jiang Xia picked up the "glass bead" next to her feet while taking out a few pieces of milk candy and handing it over.

The little guy didn't take the candy; he just stared at Jiang Xia with his big, dark eyes, looking him up and down before reaching out his hand.

Jiang Xia was about to put the candy into the little guy's hand when the little guy pushed Jiang Xia's hand back.

"Big brother, I heard from my older sister that you made yourself weak from drawing. Here, have this candy!"

"Huh? A mobile phone?"

“That’s right! If Sister Jiang Dong isn’t your sister, then you’re the big brother!” As he spoke, the little boy who called himself Feifei climbed onto Jiang Xia’s lap without any shyness and began to examine Jiang Xia’s blueprints.

Jiang Xia stood there dumbfounded, letting him do as he pleased. For a moment, her mind was a little confused: Wait, Jiang Dong, that troublesome guy, has already expanded his business scope here?

Well, since this kid calls Jiang Dong "big sister," he probably wasn't punished...

When I came to my senses, the child in my arms was moving the glass beads along the lines Jiang Xia had drawn. The glass beads made some of the small details on the drawing look quite large, and the child was laughing happily as he looked at them.

Wow, the glass ball in this child's hand is quite pure. Ordinary fired glass beads can't achieve such a clear effect.

"Haha, my older brother gave this to me. I treasure it so much; the glass beads other people have can't be used as a magnifying glass! I just really want the kind with patterns inside..."

The child raised his head, looked at Jiang Xia who was squinting, and then his eyes started to dart around again.

"Hey bro, here, use this as a magnifying glass!"

"Hey? Isn't this your treasure? How could you bear to give it to me?"

"Mom and Sister Jiang Dong told me you're a scientist. Scientists usually have poor eyesight, so that's why you drew the line crooked..."

"Oh, I do have some eye problems, but this line wasn't drawn crooked. It's an electromagnetic coil I wound; I wanted to use it to achieve a timing function over a certain span!"

The child stared wide-eyed, a little bewildered. At such a young age, he couldn't understand how this caterpillar-like "ring" could keep time...

Yes, after thinking for a long time, Jiang Xia came up with something outdated—an electromagnetic ticker timer!

This device consists of a coil, a permanent magnet, a vibrating plate, and a vibrating needle. When the coil is energized, it generates an alternating magnetic field. This alternating magnetic field interacts with the magnetic field of the permanent magnet, causing the vibrating plate to vibrate periodically. The vibrating needle on the vibrating plate then marks a dot on the moving paper tape at regular intervals.

As long as the power supply frequency is controlled at 50Hz, the dot interval can reach 0.02S.

In this way, using it as a control system for a secondary fuse looks somewhat plausible at first glance.

I just don't know if a 20-millisecond interval can produce the devastating effect of a thermobaric bomb. Hey, we don't know the crucial data! How come our people, usually so full of martial spirit, have become so secretive in later generations? They haven't maintained their good habits—they deserve criticism!

At the same time, the size of this system is what really baffles Xiao Daimao.

It won't fit. These days, lead-acid batteries are so bulky... ugh, never mind...

The conversation between the two attracted another young man, who was about the same age as Jiang Xia. After shaking hands, they learned that the young man was a little younger than Jiang Xia and was currently studying physics at Weiming Lake.

The two had little interaction and didn't communicate much. After all, the old man had once told the "brother": "Don't go out to do business, and be careful with your words and actions."

The young man, from a family with good traditions, politely took his leave, accompanied by his restless younger brother.

Feifei, with his short arms and legs, was ruthlessly suppressed by his older brother and could only desperately throw the glass bead in his hand to Jiang Xia.

"Big brother, be careful when using it! This is quartz. Sister Jiang Dong wanted to trade with me, but I didn't give it to him!"

"Okay! No problem, I'll bring you colored glass beads next time, and we'll swap!"

"Wait a minute...you mean this is quartz?"

"Yes, Comrade Jiang Xia, I bought this from the school lab to coax the youngest child. What's wrong with it?"

The young man turned around, his gaze peaceful.

"Pufang, you studied physics, do you know about the piezoelectric effect of quartz?"