spy cloud

In Zhiwei Bookstore, Zhang Tianhao sat behind the counter, slowly looking at the book in his hand. It was an English book, mainly talking about some mechanical knowledge.

It looks a bit like a textbook or something like that.

But Zhang Tianhao didn't mind. He read more and understood what he could understand. For what he didn't understand, he would just write it down and understand it slowly later.

"Hey, Master, you came so early today!"

Wu Xiaoxue carefully put down the bicycle and looked at Zhang Tianhao with some confusion.

"I couldn't sleep this morning, so I went out for a walk and accidentally walked into the bookstore!"

"So this is ah!"

Wu Xiaoxue also smiled, then picked up the buns and porridge on the table and put them aside.

"You haven't eaten yet?"

"I bought it for you this morning. I was afraid you didn't have breakfast, so I brought it here."

Zhang Tianhao also smiled, then picked up the book and began to read slowly. As for the stove on the side, he poked it open again.

"By the way, since you're here, I'll go up and make something!"

"Okay, go and do your thing!"

When Wu Xiaoxue heard this, she didn't say much. She just took the bun and sat aside to eat it. Then she picked up a book and sat there to read.

After all, today is the opening day, and there are two flower baskets at the door. However, Zhang Tianhao did not touch them. After all, setting off firecrackers here will still have a certain impact.

Upstairs, Zhang Tianhao took a look, directly connected a power source, took out a piece of pine board, which was a particularly thin one, and took out some materials, and slowly began to carve on the pine board.

Small lines appeared on the pine board. After he carved the necessary places on it, he picked up small, thin copper sheets, only two or three millimeters wide and a few tenths of a millimeter thick, and carefully pressed them on the board.

This is a delicate job and he can't do it too fast, otherwise it will be messy. And while he was doing it, he also used glue to glue the copper sheet directly to the pine board.

But the pine wood is only that big, so Zhang Tianhao still has to be extra careful when doing it.

After all, there is only a palm-sized pine board, and if you are not careful, the pine board will be ruined.

When all the copper sheets were installed, he carefully installed the specially ordered capacitors, resistors and the like on top, and then carefully fixed the capacitors and resistors with a soldering iron.

As he did it carefully, it didn't take long before a palm-sized pine board was filled with capacitors and resistors.

After looking at the capacitors and resistors, Zhang Tianhao took out a large voltage step-down device from the side and plugged it directly into the power supply. Then he connected the finished product to the power supply and saw the circuit board light up.

He also found a homemade accessory for sending messages, but it was much smaller than the parts of a normal telegraph machine.

It only had one button, and as he continued to experiment, he saw the indicator light on the circuit board flashing from time to time.

"almost!"

Zhang Tianhao looked at the small, honeycomb-like micro transmitter he had made, and he became quite excited.

Now, everything about this transmitter is successful except the wires.

He took out another small iron box from the space. It was a box specially made by Zhang Tianhao to hold a micro transmitter.

As he carefully put the things in slowly, he finally connected the antenna to it.

Finally, he looked at the transmitter. Except for the power supply, headphones, and even the buttons, everything else was ready.

Looking at the telegraph machine that was not much bigger than a palm, the corners of his mouth raised more obviously.

Carefully pull out the antenna, which is about two meters long, similar to the TV antennas of later generations, and it must be retractable.

Of course, he did not conduct any experiment. Instead, he looked at the telegraph and then took out a large battery. After all, he had no way to shrink the battery. It was not that he did not want to shrink it, but he really had no other choice.

Although ordinary batteries can power it, they are definitely not powerful enough, so special batteries are required. Now he just needs to experiment again to see how far this radio station can send telegrams.

It's just that the time is not right, otherwise he really plans to contact Chongqing. If it really works, he will definitely let everyone install miniature radios in the future.

Zhang Tianhao knew the truth, but he couldn't make it public.

After all, these radios were all made by him, so he was not worried about safety. The only thing he was worried about was that the radio technology would be spread out, which was not a good thing for him. After all, it was too small.

You should know that many of these capacitors and resistors are custom-made from abroad and are miniaturized.

He put it away again and started on the second and third.

At the end of the day, he only did three, and the results seemed pretty good.

The embassy did not assign him any tasks today. Apparently, the Japanese took too long to resolve yesterday's matter, so we need to proofread it here and then formulate a new negotiation plan.

Zhang Tianhao understood this very well, and it was a good thing for him.

After all, with more free time, he can do more things.

"Master, it's time to go home after get off work!"

Just as Zhang Tianhao put away the third miniature radio, breathed a sigh of relief, stood up and prepared to relax, he heard Wu Xiaoxue downstairs calling him to get off work.

"Xiaoxue, you go back first, I have something else to do later!"

"Okay, go home early."

"Well, I'll go home straight after I finish my work."

Zhang Tianhao smiled, put away all the tools on the table, and went straight downstairs.

As for upstairs, Wu Xiaoxue also knew that Zhang Tianhao was busy with something and had not called him throughout the day except for just now.

Zhang Tianhao went downstairs and started to turn off the stove downstairs and added some coal into it to ensure that the stove would not go out tomorrow.

When I walked out of the bookstore, I saw Wu Xiaoxue holding the key and carefully locking the door of the bookstore.

"Master, no one came to buy books in our bookstore today. If this continues, our bookstore will lose money."

"It doesn't matter. It's a loss, so what? My money can support you for a lifetime, and it will be enough for your next life. I opened a bookstore mainly to find something to do."

"So that's how it is. But, Master, do you have any money now? I remember you didn't have any money in your pocket. Did you give the money to that woman again?"

"What are you thinking, am I that kind of person?"

Zhang Tianhao smiled bitterly and shook his head. He knew a little about women's minds.

"Tonight, I will go to the Jinshui Hotel for dinner. Don't follow me. It might cause some trouble. Just you know about it."

"Are you going there for something important?"

"Yes, it is indeed something important. Just think of me as going to Zhao Chuan's place for dinner. I don't have much time, and I may have some rush in the evening."

"Then you must be careful. You haven't had a good rest recently. Your body may not be able to take it."

Wu Xiaoxue also said this with some concern.

"It's okay. I know it very well. You know my physical condition. If it's not working, you should be the first to know. I'm leaving first."

Zhang Tianhao greeted her directly, then turned and headed towards the south city.

Wu Xiaoxue was also stunned when she saw Zhang Tianhao leaving and walking towards the south city.

But she didn't say much, but turned around and left. (End of this chapter)