A nation's industrial development begins with junior engineers.

"Xiao Jiang, we don't manufacture those stepper motors. They're from the post office. If you need a lot, you'll have to go to them..."

Seeing that Jiang Xia had quickly completed the sketch, Dr. Lan Ying nodded and continued.

"Huh? The post office! Why are they getting into making electric motors?"

"We have no idea. Maybe someone who didn't follow orders accidentally messed up something important, and the relevant personnel discovered that it only works when it's spinning!"

Teacher Pei looked at Jiang Xia and smiled with a touch of emotion.

Jiang Xia suddenly realized, "Right, to make the radar's big head turn, you need a stepper motor, right? If you use a regular motor, the control input won't be as precise."

The Ministry of Posts and Telecommunications was well-suited to this field. You see, that nameless research institute in Northeast China was actually operating under the name of the Post and Telecommunications Bureau.

"Hey, could it be that those radar enthusiasts have found you? Are they trying to use Big Yellow to process ground clutter?" Jiang Xia's thoughts started to wander...

Teacher Pei pursed his lips, unsurprised by Jiang Xia's abrupt change of direction: "What direction do you have?"

"I don't have any specific suggestions, but integrated circuits are still a major part of Dr. Lan Ying's project. If Dahuang isn't miniaturized, those applications can't be realized. We can't expect them to carry Dahuang around everywhere!"

At this point, Dr. Lan Ying sped up her eating: "Alright, you brat, what a rush! I'll go do my experiment now!" As she spoke, Dr. Lan Ying angrily rubbed the dog's head, then waved her hand and left gracefully.

As she waved, a large group of people stood up in the cafeteria, following Dr. Lan Ying with great momentum...

"Hey, Aunt Lanying, that's not what I meant..."

"Stop yelling. She's already figured out a 'photolithography method,' and she was planning to do the experiment today anyway."

"Hey? You guys got the light source sorted out?"

"An ultraviolet exposure machine plus two microscopes, nothing special. Of course, I don't know the specifics either. Alright, go ahead and do your work, I don't have time to entertain you!"

Teacher Pei Shu quickly packed up the lunchboxes, and Jiang Xia then realized that only the two of them were left in the rather large cafeteria.

"Hey, the 'geming' isn't over yet, comrades, we still need to keep going. Busy indeed..."

Jiang Xia pulled out his notebook and added the post office as another place to visit.

"Where do we go next?" Old Wang handed over a military water bottle.

"Hmm... Let's go back to the train station first and find Uncle Wang. We should also take some seafood to the post office; it's our first time there, and it never hurts to be polite!"

Jiang Xia took the kettle and paused. Hmm? Why does this taste so strange?

But that's just how the water is in Beijing, so it doesn't really matter.

Let's go! Let's set off!

Just as I reached the door, I bumped into Researcher Guan, whose head was wrapped in gauze.

"Jiang Gong! Hehehe!"

Researcher Xiao Guan pulled out the three-part seal that Jiang Xia had given him a while ago. "That senior colleague said he didn't dare to touch it, nor was he willing to. He asked, 'When are you free? He'd like to invite you over for a talk.'"

"Oh!" Jiang Xia took the seal and weighed it in his hand. "I probably won't have time recently, maybe after the New Year. I can pay my respects to the old master then..."

"By the way, I've revised the 'unit analysis method' from last time. Take a look at it, and we can discuss any problems you may have!"

Researcher Xiao Guan quickly opened his notebook and began to peruse it.

"Oh! So that's how it is. It seems the person who was listening to the lecture misremembered it. That's correct..."

Even a quick glance at researcher Xiao Guan was enough to get him hooked; how much people in this era crave knowledge!

Old Wang sighed and helped Researcher Guan into the cafeteria. If he hadn't pulled him up earlier, the bump on Researcher Guan's head would probably have been wrapped up even more...

"Engineer Jiang! Engineer Jiang!"

As soon as the two reached the factory gate, the badge warrior standing in a small room waved to them.

"Hey~ what's wrong now?"

"Uh, it's the Ministry of Aircraft Industry calling. They said they want you to go to the Ministry to verify the situation, but they said they couldn't discuss the specifics over the phone."

"I still have several places to visit!"

"There's no other way. They said it's an emergency, and we have to go no matter what." The badge warrior shrugged, but his tone was firm.

"Alright, Lao Wang, could you please run errands for me at these places? I've written down everything I need to ask in my notebook."

Well, that's the problem with things these days. A single phone call involves at least three people, so you really can't just say anything that's confidential. No wonder people these days like to use code names and hold meetings.

It was truly a matter of being forced by circumstances.

As Jiang Xia got into the car that the badge warriors had specially arranged, he waved to Old Wang and said, "Comrade Wang Kui, the mission is very difficult. I hope you will live up to expectations!"

Old Wang also stood at attention: "I guarantee I'll complete the mission!"

Hey kid, when he gets serious, he's got the air of some of the higher-ups in the unit. But running errands and checking with comrades in other units, it's hardly "difficult," not at all.

Old Wang watched Jiang Xia walk away, then opened his notebook. The post office? He'd dealt with them before; no problem…

The questions I need to ask, uh, about stepper motors and high-speed bearings, um, I'll remember them!

Next place, hmm?

Ministry of Chemical Industry!

chap!

Old Wang finally came to his senses; so that's what was waiting for me...

Remembering the roaring manner of a certain director in the Ministry of Chemical Industry, Old Wang felt a little guilty.

"Intercepting traffic midway might feel good in the moment, but the trouble will be huge afterward..."

Just as Old Wang was sighing deeply, a group of people were walking slowly along the factory path...

"Oh dear, why did you give up your car? A French friend is waiting to visit you later!"

"Hey, it's just a means of transportation, use it in case of emergency! Don't you know my personality? You have to protect our research colleagues!"

"Besides, that little Jeep isn't unusable! Back in the day, my Jeep was packed with people! That's what made it lively!"

……

As Jiang Xia sat in the car, he looked around and touched everything. The badge warrior who was acting as the driver explained cheerfully, "This was sent over from the Alliance ten years ago. Do you want to rest? You can roll up the middle window!"

"Is this car bulletproof?"

Jiang Xia knocked on the car door. Wow, it's really thick.

Hey, what kind of engine does this car use? It can go so fast, the engine must be something special.

By the way, what material is used for the bulletproof steel plates on this vehicle? Could you cut off a piece to do a metallographic test? The five pairs of wheels of this grassland warrior are a bit of a stretch with just external armor.

A barrage of questions left the badge warrior speechless.

"Uh, this is a ZIZ ONE15, the whole vehicle weighs nearly 8 tons! I can't tell you the rest!"

"And another thing, you better behave yourself, put down the screwdriver. If you dare to take anything apart, believe me, I can hang you on the city wall. Don't you even know whose car this is..."

Tsk, no fun. Jiang Xia, hearing that he couldn't disassemble it, reluctantly put away the screwdriver and stopped paying attention to it. Anyway, he still had the horizontal engine to tinker with, no rush. Thinking about it, he realized he had forgotten the last part of the Badge Warrior's words.

"Dr. Lan Ying plans to use an exposure machine and a microscope for photolithography. Is that feasible?"

"They've already worked on the photoresist? And the worktable—if we're not doing multiple exposures, we'll still need overlay, right? Should we get a positioning worktable first?"

Jiang Xia took out his notebook and started to let his thoughts wander again.

This series of actions made the badge warrior in the driver's seat look at him with even more respect.

"Hey, this kid's got guts. He knows whose car it is and can still get right to work, that's impressive!"

This gentleman's car has carried other people before.

But they either sit upright and serious or are extremely excited, unlike this kid who comes up and is ready to dismantle the car door.

The sun is really high in the sky, like it's seven or eight o'clock...

Actually, Jiang Xia knew nothing about it.

A wonderful misunderstanding.