The young man was anxious because after two weeks of trying to fend off the opponent, he was about to lose what he was about to gain.

"Uncle Gui, I want that thing, and I don't need you to discount it. That's alright."

The salesman was stunned for a moment when he heard this, but before he could speak, Li Tong interrupted abruptly: "If you want to buy, pay now. If you don't have money, just step aside."

"Yes, you haven't been watching it for two weeks, so I'd better forget it. In fact, the movable detector is also quite easy to use." The salesman's uncle immediately squinted at Li Tong's reminder, and the two of them squinted.

It’s easy to see who has money and who doesn’t.

"What are you talking about, you little brat? Do you know who I am?" The young man clenched his fists and glared at Li Tong angrily, threatening.

"Third brother, why don't we leave?"

Jiang Tianliang tugged on Li Tong's blouse with some fear to express that he did not want to argue with the other party, but Li Tong's anger had already been raised. How could he allow the other party to provoke him again and again.

"I'm not interested in who you are, and I don't want to know. And who are you yelling at here? Do you want me to call the police uncle over, and you can tell him who you are!"

"Okay, okay, you two, just wait for me!" The young man was speechless by Li Tong, so he turned around and walked away.

It's impossible not to leave. Just like Li Tong said, the money in his pocket is simply not enough to pay. If he stays, he will only continue to lose face. It's really a penny that can't help a heroic man.

"Look at the fuss about this thing, don't worry about it, let's look at ours. This thing's scientific name is a high-frequency germanium point contact diode. You may not notice that it is small, but the effect of receiving electromagnetic wave signals is much better than these two ore detectors.

Got it." The salesman took out a small cardboard box from under the counter and showed Li Tong the diodes inside.

Li Tong had never seen a diode before, but he had heard about its uses and knew that the salesman was right.

"How to sell this thing?"

"1 yuan 5."

"How much? 1.5 yuan!" Jiang Tianliang screamed.

"Don't worry, the stuff is good, but the price is a bit expensive. Can it be cheaper?" Li Tong thought it was not expensive. After all, a radio costs more than 100 yuan, and the parts are not much cheaper.

"The prices are all set by the mall and I can't help it, but I have a second-hand high-impedance headphone that I can sell to you at a low price. The new one costs 4.5 yuan. Although mine is a bit broken, it will definitely be okay to make do with it. Can you give it to me?

Just 2 yuan.”

The salesman looked around and saw that no one was paying attention to him. He bent down and took out another cardboard box from the cabinet. He opened the lid and inside was a pair of headphones that had been removed from an old walkie-talkie.

"This thing can be considered an antique. If you sell it to me for 2 yuan, wouldn't you lose money?" Li Tong smiled very innocently.

"Okay, I admit that the appearance of this thing is average. If you really want to buy it, you can pay 3 yuan for the two together." The salesman finally saw that Li Tong was a knowledgeable kid and stopped beating around the bush.

The virtual price is directly erased.

"Okay, then you can get me some more copper wire, and also get me a rotary switch and a variable capacitor." Li Tong didn't bargain again. He rarely bargained with others when buying things before.

The air variable capacitor is composed of two sets of copper pole pieces. The insulating medium in the middle is air. One set of pole pieces is mounted on a rotating shaft and can rotate and is called a moving piece. The other set is fixed and is called a fixed piece.

piece.

When all the moving pieces are screwed into the gap of the stator, the capacitance of the capacitor will reach the maximum. The resonant frequency can be adjusted by rotating the variable capacitor, and the purpose of channel selection can be achieved by cooperating with the frequency modulation coil.

"Aren't you good at assembling a mineral radio? I have all the things you need here. I guarantee that you won't have to make a second trip and you can listen to the program tonight." The salesman saw that the half-year-old walkie-talkie headset in his hand was finally ready.

Now that it's taken care of, I feel very good.

Without Li Tong having to say anything, he took the initiative to dig out the remaining spare parts needed to assemble the ore radio and put them on the counter.

"Together, these things are enough for you to assemble a mineral radio. After excluding the money for diodes and headphones, you have just enough money left." After the salesman said this, he stretched out his hand to collect the money.

"If you buy so many things, you have to give me a discount. It seems like you still need a wooden box to hold these parts." Li Tong put his hand on the handkerchief.

"You still have to pay 18 cents for the wooden box. You can go home and ask the adults to get some wood boards and you can make it yourself. There is no need to spend this money." The salesperson persuaded Li Tong as if he was thinking about you.

"You don't need to bother your parents anymore if you have it ready. Uncle, don't you want to give it to us?" Li Tong shrank back the hand holding the handkerchief, as if he would take away the money on the counter if he heard the wrong answer.

.

"Well, you have to pay at least another 10 cents for this. You can't let me fill this hole for you, right?" The salesman said very sincerely after hesitating for a moment.

Li Tong looked at the other person for a full 10 seconds and saw that he showed no sign of letting go, so he smiled and nodded.

Li Tong and Jiang Tianliang had just walked out of the department store carrying a lot of spare parts, when Jiang Tianliang sharply spotted a familiar figure squatting on the street corner not far away.

"Third brother, look over there. That man just squatted at the intersection without leaving. He is probably guarding us." Jiang Tianliang touched Li Tong with his shoulder, and then motioned Li Tong to look at the opposite street corner with his eyes.

go.

"Don't pay attention to him. Let's take a taxi home and let this grandson watch over us."

After Li Tong finished speaking, he pushed Jiang Tianliang back to the door of the department store. The young man who originally noticed the two of them standing up squatted back again, his eyes full of hatred.

The two sides did not stand in a stalemate for too long. A tricycle with a ringing bell appeared at the corner of the street. It was probably the first time for Jiang Tianliang to ride in such a paid rickshaw. He stood up and shouted to the tricycle driver excitedly.

"Rickshaw! Rickshaw! This way, this way."

"Two kids, are you going to take a car?" The coachman stopped the car and asked Jiang Tianliang and the others cheerfully.

"Uncle, how much does it cost for us to take a bus to Jiaodaokou Nanluogu Lane?"

"I'll give you 10 cents for the two of you plus these things."

"No problem, uncle, look over there, yes, that's the young man."

"What's wrong with him?"

"He wants to steal our things, so don't pay attention to him whatever he says later."

"That's no problem, let's get in the car."

Li Tong and Jiang Tianliang moved their things into the car. When the young man at the corner saw this, he ran quickly and wanted to stop Li Tong and the others.

When the coachman saw this, he immediately got out of the car, pulled out a short stick from the railing of the carriage, looked at the other party with eager eyes and scolded him.
Chapter completed!