Shen Xiulan put down the broom in her hand, invited Lin Zhi in, and said with a smile: "I'm his girlfriend!" ”

When Lin Zhi heard this, he was stunned for a moment, then frowned, as if he was thinking about something, his eyes widened in an instant, he pursed his thin lips, and said with a smile: "Are you his girlfriend?" How old are you? Just in love? Do your parents and teachers care about you? ”

Shen Xiulan lowered her head shyly, and suddenly a feeling of shame invaded her for no reason, she blushed and slowly lowered her long eyelashes, as if she was fighting against sleep.

After all, she is still too young and thin-skinned.

When she was in school, although she and Li Yunhai were in love, they actually chatted together, borrowed books from the library together, studied in the study room, and occasionally hid in the woods in the playground, holding hands, and did not do anything out of the ordinary.

As for the correspondence, most of the conversations are about reading experiences, and even discussing how to do homework, as well as life feelings and ideal futures.

I haven't even used words like I love you and I like you!

But in their hearts, they knew that this was falling in love.

Shen Xiulan's family also thinks so.

In this era when the mind is not too open, a girl lets go of her reserve and shyness, and goes in and out of a pair with a boy, isn't this falling in love?

But I don't know why, when facing Lin Zhi, Shen Xiulan was actually shy.

Lin Zhi took Shen Xiulan's little hand familiarly, like a girlfriend who had known each other for a long time, and asked in a low voice: "How far have you and him developed?" Did you give yourself to her? Giggles! ”

Shen Xiulan was even more restrained and cramped, and two colorful blush flew on her pretty face: "No! He and I were classmates, and once he saved me, we dating. But he said he wanted to marry me! ”

Lin Zhi smiled softly: "I really envy you, you are so young and have a private contract with the Mandarin League." Li Yunhai is a man who promises a lot of money, he said that he wants to marry you, and he will definitely marry you. ”

Shen Xiulan hummed heavily, gradually faded away from her shyness, and asked, "Lin Zhi, you came to Yunhai, what's the matter?" ”

Lin Zhi blinked lightly and said, "I'm going to work tomorrow, I'll tell him." These days he went to buy a photocopier, I wanted to help him take care of the business in the store, but my grandfather was sick, my parents were not available, I was in the hospital to take care of my grandfather, so I didn't come to help him look at the store. ”

Shen Xiulan went outside to buy a bottle of cold soda, handed it to Lin Zhi to drink, and said, "Yunhai told me about you, saying that you are a very affectionate person. Go to work with peace of mind! I'll help him when I have time. ”

Lin Zhi's lips were thin, revealing alertness and aura, and she said with a smile: "Li Yunhai is also a man who values love and righteousness. He helped my family repair two electrical appliances, but he didn't take any money from me, and I was grateful to him and helped him do it for two days. I'm going to be very busy when I get to work. Tell him for me, and I'll not wait for him to come back. ”

Shen Xiulan sent her to the door and said, "Linzhi, come and play when you have time!" ”

Lin Zhi waved goodbye, got on his bicycle and left.

A gust of wind blew, shaking off the dust from the trees, and one of them drifted right into her eyes.

Lin Zhi's eyes were sour, and two crystal tears accidentally slipped down.

If you get dust in one eye, will tears fall from both eyes?

The wind blows Nyingchi's white gauze skirt.

In the sorrow of the wind, her color was dissipated, her fragrance was dispersed, and even her breath-like eyes, lilac-like melancholy.

Some things are destined to end before they have even begun.

Should she be glad she didn't confess?

Or should I be sad and sad and not even confess?

……

Li Yunhai bought accessories and came back.

As soon as you enter the door, you can smell the fragrance of soap.

Shen Xiulan cleaned the house, and even the open space at the door, she cleaned it carefully.

She mixed some soapy water in the water and used it to wipe the floor and wipe the furniture, and the air was full of fragrance.

Shen Xiulan took a big bag in Li Yunhai's hand and asked, "You buy so many accessories?" ”

Li Yunhai said yes, turned on the faucet, and gulped a few gulps of water.

Shen Xiulan sighed: "Sea of clouds, you can't drink raw water!" If you live for a long time, buy a briquette stove! It was easy to boil water for cooking. ”

Li Yunhai wiped the water droplets from the corners of his mouth and grinned: "Okay! If you're willing to come over and help me cook and boil water, I'll buy it. ”

Shen Xiulan smiled and said, "Of course I do." However, are you going back to Meishan County to report? The check-in pass has an expiration date! ”

Li Yunhai groaned: "This is really a dilemma for me now!" ”

Shen Xiulan asked puzzledly, "What's so difficult about this?" Didn't you say that you want to make some money by doing repairs and paying tuition fees for your younger brothers and sisters, and then you will go back to Meishan County to work? You don't want the status of a national worker, do you? Self-employed people have no status at all. Didn't your family send you books to read for so many years just to make you a national worker? ”

Li Yunhai sighed helplessly: "This is my dilemma. Xiulan, let's not talk about that, do you know how much money I can make if I fix these copiers? ”

Shen Xiulan shook her head, of course she didn't understand, and she had no way to understand this information.

This is a time when information is grossly misaligned.

Not to mention that the interlacing is like a mountain, it is the people who go with you, the master who knows how to repair, and may not know the huge business opportunities contained in the second-hand copier industry!

Li Yunhai smiled proudly, covered his mouth with his hand, suppressed his voice, and whispered in Shen Xiulan's ear: "As long as I repair a machine, I can make 10,000 yuan by selling it!" ”

Shen Xiulan was so surprised that she could barely close her mouth, and she couldn't speak for a long time.

"Yunhai, are you serious? Sell one of these photocopiers and you can make 10,000? 10,000 yuan? A thousand sheets of great unity? ”

"That's right! I just went to Kewen Company to take a look, like this Ricoh brand copier, the price in their store is 46,800 yuan! And these photocopiers, I bought them back for 90 yuan, as long as they can be repaired, isn't it casual to sell them for more than 10,000 yuan? Compared to the new machine, my photocopier is cheaper, only one-fifth the price! Fools know it's a good deal to buy my machine! ”

"But first you have to be able to fix it, and then you have to find a buyer."

"My craft, don't worry! I'm sure I'll be able to fix these machines. As for the buyer, I have already found the next home, the head office of a bank in Xizhou, to purchase 5 photocopiers. I know their logistics manager, Mr. Liu, and I have already told him that as long as I have eighty percent of the new second-hand photocopiers, he is willing to buy my machine at half price! ”

"Half price? Then these machines, can't you earn more than 20,000 units? Oh, my God! Yunhai, is this business so profitable? Are you sure? There won't be any pitfalls, right? ”

"Don't worry! That's how profitable this business is! A book of ten thousand profits! ”

"Yunhai, such a lucrative business, no one else thought of it, just thought of it?"

"Who called me smart! Otherwise, you can take a fancy to me? ”

"Hey!" Shen Xiulan smiled brightly, her face as delicate and charming as a blooming flower.

She told Li Yunhai about Lin Zhi's visit.

Li Yunhai sighed, not caring at all.

He was now single-minded and just wanted to get the copier repaired as soon as possible.

The problem that Li Yunhai urgently needs to solve is the power supply.

Imported Toyo equipment is a 110V power supply.

To use the 110V power supply electrical appliances in the 220V socket, the transformer device must be used in the middle, otherwise the machine will be burned.

Don't underestimate such a problem, it can stump most people.

But this matter can't help Li Yunhai.

There are many ways to convert 220v to 110v.

First, it is directly realized with a step-down transformer, check the nameplate power of the electrical appliance, and the power of the transformer is greater than the nameplate power. This is the cheapest method, but the disadvantage is that it is not aesthetically pleasing and it is not easy to connect.

The second is to purchase a finished 220V to 110V adaptive power supply, which is suitable for electrical appliances purchased from Toyo, which is slightly more expensive but easy to use.

Third, it is used for more precision electrical appliances, which requires the purchase of 220V/110V switching power supply, which has good output stability but is expensive.

However, Li Yunhai is even more demanding!

He wanted to change the power system of the photocopier without leaving a trace.

There are several advantages to this, one is that it is difficult for peers to disassemble his machine and see the doorway. The second is to sell good-looking, without destroying the original structure of the copier, and without adding conspicuous components, which can be sold at a higher price.

The method that Li Yunhai thought of was actually very simple.

In the power supply circuit, a half-wave rectification step-down of a diode is stringed, and the voltage is equal to 220V multiplied by 0.45, and finally the voltage of 99V is obtained, which is within the allowable range of voltage of the copier.

Diode models are available in 1N4004 or 1N4007 and can also be used with resistor-capacitance bucking.

As for the frequency, it is 100V/50Hz in the Kanto region and 100V/60Hz in the Kansai area.

Whether it is 50Hz or 60Hz, it can be used in China, and it is not a big problem.

To change the voltage, the technical requirements for workers are very high.

Ordinary people don't understand these things at all, let alone hands-on ability.

People who really have this ability are comfortable working in state-owned enterprises!

This is also the reason why the second-hand copier market in the 80s will be monopolized by Meishan people.

Li Yunhai just happened at the right time, lost it in advance, found this gold industry, and entered this blue ocean market without hesitation.

Before modifying the power supply of the photocopier, Li Yunhai first made a transformer converter for test use.

If you want to change the 220V mains power to 110V, you can choose a transformer according to the power of the electrical equipment and adopt the voltage divider principle of the autotransformer to achieve it.

For example, if the electrical appliance used is 60W, choose a transformer with a power of 100W. Every 3 revolutions of volt, as long as 660 circles, marked 0, 1, 2, 0 and 1 or 1 and 2 after the middle tap, the output voltage of 110V can be obtained.

This 110V is easy to get, and it's easier to wrap it up by yourself.

Li Yunhai used this circuit principle to build a transformer with the electronic components he bought on the market.

With a 220V to 110V transformer, Li Yunhai can finally try to power up the copier!

What is the quality of these copiers, you can detect it as soon as the power is turned on!

Is it worth fixing?

Is it expensive to fix?

Li Yunhai is also looking forward to it!